Sunday, July 29, 2018

We study gender differences in altruistic behaviour and in expected altruism; women are significantly more altruistic than men; & both women and men expect women to be more altruistic than men

Gender differences in altruism on Mechanical Turk: Expectations and actual behaviour. Pablo Brañas-Garza, Valerio Capraro, Ericka Rascón-Ramírez. Economics Letters, Volume 170, September 2018, Pages 19-23. https://doi.org/10.1016/j.econlet.2018.05.022

Highlights
•    We study gender differences in altruistic behaviour. We also study gender differences in expected altruism.
•    We use a sample of Amazon Mechanical Turk crowdworkers living in the US (simple ¿ 4,000 workers).
•    We show that women are significantly more altruistic than men. We also show that both women and men expect women to be more altruistic than men.

Abstract: Whether or not there are gender differences in altruistic behaviour in Dictator Game experiments has attracted considerable attention in recent years. Earlier studies found women to be more altruistic than men. However, this conclusion has been challenged by more recent accounts, which have argued that gender differences in altruistic behaviour may be a peculiarity of student samples and may not extend to other groups. Here we study gender differences in altruisticbehaviour and, additionally, in expectations of altruistic behaviour, in a sample of Amazon Mechanical Turk crowdworkers living in the US. In Study 1, we report a mega-analysis of more than 3, 500 observations and we show that women are significantly more altruistic than men. In Study 2, we show that both women and men expect women to be more altruistic than men.

Check also Morality Is for Choosing Sides. Peter DeScioli, Robert Kurzban. https://www.bipartisanalliance.com/2018/07/morality-is-for-choosing-sides-not-for.html

And Theories of human altruism: a systematic review. Svetlana Feigin, Glynn Owens and Felicity Goodyear-Smith. Annals of Neuroscience and Psychology, 2014. https://www.bipartisanalliance.com/2018/04/theories-of-human-altruism-future.html

Saturday, July 28, 2018

NYT Very Surprised That "A Fear of Lawsuits Really Does Seem to Result in Extra Medical Tests"

Defensive Medicine: Evidence from Military Immunity. Michael D. Frakes, Jonathan Gruber. NBER Working Paper No. 24846, July 2018. http://www.nber.org/papers/w24846

Abstract: We estimate the extent of defensive medicine by physicians, embracing the no-liability counterfactual made possible by the structure of liability rules in the Military Heath System. Active-duty patients seeking treatment from military facilities cannot sue for harms resulting from negligent care, while protections are provided to dependents treated at military facilities and to all patients—active-duty or not—that receive care from civilian facilities. Drawing on this variation and exploiting exogenous shocks to care location choices stemming from base-hospital closures, we find suggestive evidence that liability immunity reduces inpatient spending by 5% with no measurable negative effect on patient outcomes.

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A Fear of Lawsuits Really Does Seem to Result in Extra Medical Tests. By Margot Sanger-Katz
https://www.nytimes.com/2018/07/23/upshot/malpractice-lawsuits-medical-costs.html
Doctors are known for complaining about how the malpractice system adds costs. But it has been hard to prove, until now.
The New York Times, July 23, 2018

Back in 2010, Tom Price, then a congressman, said he knew the chief reason health care cost so much: “Defensive medicine” was costing the United States $650 billion per year — about 26 percent of every dollar spent.

The widely dismissed estimate from Dr. Price, an orthopedic surgeon who went on to become President Trump’s health and human services secretary before resigning last fall, was memorable for its magnitude.

But American doctors often rail against the country’s medical malpractice system, which they say forces them to order unnecessary tests and procedures to protect themselves if a patient sues them. Some prominent health economists, including those at the Congressional Budget Office, have tended to play down such costs, arguing that medical practice is not too warped by fear of lawsuits. But the question has proved difficult to study, since patients nearly everywhere can sue. Without a control group, it’s hard to know how differently doctors might act if they were less worried about liability.

Researchers from Duke and M.I.T. have found a pocket of America that is different, and they now offer what is perhaps the most precise estimate of how much defensive medicine matters, at least for care in the hospital. They found that the possibility of a lawsuit increased the intensity of health care that patients received in the hospital by about 5 percent — and that those patients who got the extra care were no better off.

“There is defensive medicine,” said Jonathan Gruber, a health economist at M.I.T. and an author of the paper, which was published in draft form Monday by the National Bureau of Economic Research.  “But that defensive medicine is not explaining a large share of what’s driving U.S. health care costs.”

Mr. Gruber and Michael D. Frakes, a Duke economist and lawyer, looked at the health care system for active-duty members of the military. Under longstanding law, such patients get access to a government health care system but are barred from suing government doctors and hospitals for malpractice. Their family members can also use the military hospitals, but they can sue for malpractice if they wish.

Their study looked at what happened to the hospital care that military members received when a base closing forced them to use their benefits in civilian hospitals, where it was possible to sue. Spending on their health care increased, particularly on extra diagnostic tests.

They also found that, even within the military hospitals, family members who could sue tended to get more tests than those who could not.

Previous research has primarily looked at the effects of smaller legal reforms, like state caps on the awards that malpractice victims can collect in court. Those studies showed some declines in medical spending related to the policies. But they tended to be small, and yearly variation in medical spending made it difficult to be sure how much of the difference was  because of the legal change.

“They did a nice job of finding a population of patients who are being treated by doctors who didn’t have any liability,” said Mark McClellan, the director of the Duke-Margolis Center for Health Policy. Dr. McClellan was a top health official in the George W. Bush administration, which pushed for national liability caps.

The paper’s focus on the hospital allowed the researchers to have a lot of precision in their measurements. But it means they didn’t capture all the places where defensive medicine might occur. It’s possible, for example, that liability concerns cause treatment to rise by more than 5 percent for emergency room patients who go home the same day — or not at all in a typical office visit.

Mr. Frakes and Mr. Gruber examined a large number of quality indicators to determine whether the doctors who practiced less intense medicine on their military patients were somehow cutting corners.  Each measure differed, and there were some places where harm couldn’t be ruled out, but they found no place where the quality of care in the military hospital appeared to clearly be worse.  That finding suggests that, when doctors do extra treatment or testing to avoid liability, they are not necessarily taking extra steps that make their patients any healthier.

“It suggests that physicians change their behavior in response to liability considerations, but they don’t do it in a very calibrated way,” said Michelle Mello, a professor of law and health policy at Stanford, who has studied medical malpractice. “They tend to make a lot of changes that don’t result in better patient care.”

In the federal government and in states, there are frequent proposals to limit medical liability, but there have been no serious efforts to eliminate medical malpractice rights altogether. Mr. Gruber said the paper’s estimates were best viewed as a kind of ceiling for the effects of more realistic reforms.

Any law that limits the cases where patients can sue, or the amount of money they can collect, is likely to lower medical use  in the hospital by less than the 5 percent they measured in their study.

Amitabh Chandra, a health economist at Harvard, said the best policies needed to lower the burden on physicians while still generating “social value.” He said that continued research on the relationship between malpractice pressure and health care quality was important as different approaches were tested.

The most popular state action has been to impose caps on monetary damages. In the paper, the authors suggest different types of changes to malpractice policy, including one in which doctors would be shielded from liability if they adhered to common standards of care. Ms. Mello suggested studying a system in which administrative courts, instead of juries, determined liability and damages.

Other possible approaches haven’t been tried, like a system used for childhood vaccines, in which patients are paid if they are harmed by medical care, regardless of fault.

“Policymakers have only experimented with a limited set of types of reforms to date,” Mr. Frakes said. “We haven’t experimented a lot with more structural reforms to the system.”

Margot Sanger-Katz is a domestic correspondent and writes about health care for The Upshot. She was previously a reporter at National Journal and The Concord Monitor and an editor at Legal Affairs and the Yale Alumni Magazine. @sangerkatz • Facebook

A version of this article appears in print on July 24, 2018, on Page B4 of the New York edition with the headline: Doctors’ Fear of Lawsuits May Hit Patients in the Wallet, Study Hints

Cognitive neuroscience of person identification: Comparing the processes by which people are identified through face & voice, find that face recognition accuracy suffers little or no cost with increases in set size; voice recognition accuracy declines markedly beyond a handful of possibilities

The cognitive neuroscience of person identification. Irving Biederman et al. Neuropsychologia, Volume 116, Part B, 31 July 2018, Pages 205-214. https://doi.org/10.1016/j.neuropsychologia.2018.01.036

Highlights
•    The processes by which people are identified through face and voice are compared.
•    Face recognition accuracy suffers little or no cost with increases in set size.
•    Voice recognition accuracy declines markedly beyond a handful of possibilities.
•    The deficit in congenital phonagnosia need not be perceptual.
•    Face and voice recognition abilities are uncorrelated.

Abstract: We compare and contrast five differences between person identification by voice and face. 1. There is little or no cost when a familiar face is to be recognized from an unrestricted set of possible faces, even at Rapid Serial Visual Presentation (RSVP) rates, but the accuracy of familiar voice recognition declines precipitously when the set of possible speakers is increased from one to a mere handful. 2. Whereas deficits in face recognition are typically perceptual in origin, those with normal perception of voices can manifest severe deficits in their identification. 3. Congenital prosopagnosics (CPros) and congenital phonagnosics (CPhon) are generally unable to imagine familiar faces and voices, respectively. Only in CPros, however, is this deficit a manifestation of a general inability to form visual images of any kind. CPhons report no deficit in imaging non-voice sounds. 4. The prevalence of CPhons of 3.2% is somewhat higher than the reported prevalence of approximately 2.0% for CPros in the population. There is evidence that CPhon represents a distinct condition statistically and not just normal variation. 5. Face and voice recognition proficiency are uncorrelated rather than reflecting limitations of a general capacity for person individuation.

Keywords: Voice recognition, Phonagnosia, Face recognition, Prosopagnosia, Face imagination, Voice imagination

Trigger warnings may inadvertently undermine some aspects of emotional resilience: They increase peoples' perceived emotional vulnerability to trauma, the belief that trauma survivors are vulnerable, & increase anxiety to written material perceived as harmful

Trigger warning: Empirical evidence ahead. Benjamin W.Bellet, Payton J.Jones, Richard J. McNally. Journal of Behavior Therapy and Experimental Psychiatry, https://doi.org/10.1016/j.jbtep.2018.07.002

Highlights
•    Trigger warnings increase peoples' perceived emotional vulnerability to trauma.
•    Trigger warnings increase peoples' belief that trauma survivors are vulnerable.
•    Trigger warnings increase anxiety to written material perceived as harmful.

Abstract

Background and objectives: Trigger warnings notify people of the distress that written, audiovisual, or other material may evoke, and were initially used to provide for the needs of those with posttraumatic stress disorder (PTSD). Since their inception, trigger warnings have become more widely applied throughout contemporary culture, sparking intense controversy in academia and beyond. Some argue that they empower vulnerable individuals by allowing them to psychologically prepare for or avoid disturbing content, whereas others argue that such warnings undermine resilience to stress and increase vulnerability to psychopathology while constraining academic freedom. The objective of our experiment was to investigate the psychological effects of issuing trigger warnings.

Methods: We randomly assigned online participants to receive (n = 133) or not receive (n = 137) trigger warnings prior to reading literary passages that varied in potentially disturbing content.

Results: Participants in the trigger warning group believed themselves and people in general to be more emotionally vulnerable if they were to experience trauma. Participants receiving warnings reported greater anxiety in response to reading potentially distressing passages, but only if they believed that words can cause harm. Warnings did not affect participants' implicit self-identification as vulnerable, or subsequent anxiety response to less distressing content.

Limitations: The sample included only non-traumatized participants; the observed effects may differ for a traumatized population.

Conclusions: Trigger warnings may inadvertently undermine some aspects of emotional resilience. Further research is needed on the generalizability of our findings, especially to collegiate populations and to those with trauma histories.

When comparing ideal partner preferences, continually-coupled individuals rated Warmth/Trustworthiness and Vitality lower than newly-coupled individuals: Coupled individuals adjust their ideal mate preferences according to their actual partner

Coupled individuals adjust their ideal mate preferences according to their actual partner. Radka Kučerová, Zsófia Csajbók, Jan Havlíček. Personality and Individual Differences, Volume 135, 1 December 2018, Pages 248-257. https://doi.org/10.1016/j.paid.2018.07.019

Abstract: It has been suggested that coupled individuals tend to adjust their ideal partner preferences according to their actual partner. In Study 1, we developed a mate preference trait-list and found a four-factor structure (Physical attractiveness, Status/Resources, Vitality, and Warmth/Trustworthiness), which we confirmed in Study 2. In Study 3, we compared ideal and actual partner preferences in continually-coupled and newly-coupled individuals. Ideal partner preferences were recorded in continually-coupled participants while in the relationship and in single participants before they established a relationship. Results showed that discrepancy between ideal and actual partner evaluations was lower in continually-coupled than in newly-coupled individuals when computing Manhattan distance between them. When comparing ideal partner preferences, continually-coupled individuals rated Warmth/Trustworthiness and Vitality lower than newly-coupled individuals. No difference between continually-coupled and newly-coupled individuals was found in their actual partner evaluations. Our results indicate that relationship status significantly affects ideal partner preferences.

Against the widespread belief that modern-day loneliness is inevitable, negative, and universal, loneliness is relatively recent invention, dating from around 1800 that needs to be understood firstly as an “emotion cluster” composed of a variety of affective states

This “Modern Epidemic”: Loneliness as an Emotion Cluster and a Neglected Subject in the History of Emotions. Fay Bound Alberti. Emotion Review, https://doi.org/10.1177/1754073918768876

Abstract: Loneliness is one of the most neglected aspects of emotion history, despite claims that the 21st century is the loneliest ever. This article argues against the widespread belief that modern-day loneliness is inevitable, negative, and universal. Looking at its language and etymology, it suggests that loneliness needs to be understood firstly as an “emotion cluster” composed of a variety of affective states, and secondly as a relatively recent invention, dating from around 1800. Loneliness can be positive, and as much a part of the body as the mind. Using a longue durée approach, I argue that we cannot understand loneliness as a “modern epidemic” without considering its history, its meanings, its practice, and its links with the body.

Keywords: emotion, history, loneliness, longue durée

Friday, July 27, 2018

Malicious poisonings: Agent choice was found to differ between experts & non-experts (depending on whether the event was a threat or a genuine contamination incident); attacks by poison experts were found to be no more deadly than attacks perpetrated by non-experts

Poisoning expertise and outcomes in malicious contamination incidents. Sarah Kilbane. Journal of Criminal Psychology, https://www.emeraldinsight.com/doi/abs/10.1108/JCP-02-2018-0008?journalCode=jcp

Abstract:

Purpose: It is often assumed that poisoners and product tamperers are likely to share an interest in or knowledge of poisonous substances. The purpose of this paper is to determine whether perpetrators with existing poison knowledge will choose different contaminating agents than non-experts, as well as whether there is a link between poison expertise and outcomes in malicious contamination cases. Based on their expertise, it is expected that those perpetrators with some form of existing poison knowledge would select more concerning and difficult to obtain agents, and that attacks committed by experts would result in more harm than attacks by non-experts.

Design/methodology/approach: A content analysis was conducted on qualitative descriptions of malicious contamination events, with relevant behavioural variables identified as being present or absent for each individual case. Differences between experts and non-experts in agent choice and incident outcome were then explored using descriptive statistics, contingency tables and Mann-Whitney U tests.

Findings: Agent choice was found to differ between experts and non-experts, with different agents chosen depending on whether the event was a threat or a genuine contamination incident. However, attacks by poison experts were found to be no more deadly than attacks perpetrated by non-experts.

Originality/value: This research provides the first known analysis comparing agent choice and outcomes in malicious contamination incidents as a factor of perpetrator knowledge. Investigative applications are discussed.

Keywords: Expertise, CBRN, Threat, Malicious contamination, Poisoning, Product tampering

Rolf Degen summarizing: Neuroscientists failed to pinpoint the brain correlate of boredom, arguably because many people find their own thoughts so entertaining that they are not easily bored

Finding Consistency in Boredom by Appreciating its Instability. Caitlin Mills, Kalina Christoff. Trends in Cognitive Sciences, https://doi.org/10.1016/j.tics.2018.07.001

Abstract: Boredom has recently piqued cognitive neuroscientific interest, but remains a challenge to scientific investigation in this field. We propose that to advance this research, we should (i) seek greater consistency of operationalization and measurement across studies and participants; and (ii) appreciate the temporal instability of boredom and its ensuing dynamics.


Abstract: Boredom has recently piqued cognitive neuroscientific interest, but remains a challenge to scientific investigation in this field. We propose that to advance this research, we should (i) seek greater consistency of operationalization and measurement across studies and participants; and (ii) appreciate the temporal instability of boredom and its ensuing dynamics.

1932: The electoral sway of the Depression was quite limited, the government was not seen by most voters (including FDR ones) as the major culprit or as having been ineffective in alleviating it; moreover, there was no widespread “doom and gloom” about the future

The American Voter in 1932: Evidence from a Confidential Survey. Helmut Norpoth. PS: Political Science & Politics, https://doi.org/10.1017/S1049096518001014

Abstract: In 1932, the American electorate was surveyed in a poll that has languished in the archives. The survey was conducted by Houser Associates, a pioneer in market research. It interviewed face-to-face a representative cross section about voter choices and issue attitudes. Although conducted on behalf of the Hoover campaign, the poll was not biased in his favor. The most striking revelation is that the electoral sway of the Depression was quite limited. The government was not seen by most voters as the major culprit or as having been ineffective in alleviating it. Even many FDR voters agreed. Moreover, there was no widespread “doom and gloom” about the future. What loomed larger in 1932 was the issue of Prohibition. The American people overwhelmingly favored repeal. The Democratic stand on it—that is, outright repeal—was a sure electoral winner, given Hoover’s staunch defense of Prohibition.

After deciding among moral (but not nonmoral) options, people (in Western cultures) tend to choose more variety in an unrelated task, likely because choosing more variety helps them reassert their sense of choice

Kouchaki, M., Smith, I. H., & Savani, K. (2018). Does deciding among morally relevant options feel like making a choice? How morality constrains people’s sense of choice. Journal of Personality and Social Psychology. http://dx.doi.org/10.1037/pspa0000128

Abstract: We demonstrate that a difference exists between objectively having and psychologically perceiving multiple-choice options of a given decision, showing that morality serves as a constraint on people’s perceptions of choice. Across 8 studies (N = 2,217), using both experimental and correlational methods, we find that people deciding among options they view as moral in nature experience a lower sense of choice than people deciding among the same options but who do not view them as morally relevant. Moreover, this lower sense of choice is evident in people’s attentional patterns. When deciding among morally relevant options displayed on a computer screen, people devote less visual attention to the option that they ultimately reject, suggesting that when they perceive that there is a morally correct option, they are less likely to even consider immoral options as viable alternatives in their decision-making process. Furthermore, we find that experiencing a lower sense of choice because of moral considerations can have downstream behavioral consequences: after deciding among moral (but not nonmoral) options, people (in Western cultures) tend to choose more variety in an unrelated task, likely because choosing more variety helps them reassert their sense of choice. Taken together, our findings suggest that morality is an important factor that constrains people’s perceptions of choice, creating a disjunction between objectively having a choice and subjectively perceiving that one has a choice.

Musical activity during waking seems related to a higher amount of music dreams: About 6% of all remembered dreams contained music, & frequency was significantly higher when the participants spent time with music activities in waking (singing, playing an instrument)

König, N., Fischer, N., Friedemann, M., Pfeiffer, T., Göritz, A. S., & Schredl, M. (2018). Music in dreams and music in waking: An online study. Psychomusicology: Music, Mind, and Brain, 28(2), 65-70. http://dx.doi.org/10.1037/pmu0000208

Abstract: A connection between music and dreams has been reported in many cultures. Although inspirations by dreams were reported for famous musicians, there are few studies investigating the occurrence of music dreams in the general population. In the present online study, 1,966 participants filled out an online questionnaire concerning their involvement in music in waking and the occurrence of music in dreams. The basic framework for the study was the continuity hypothesis of dreaming; that is, more musical activity during waking should be related to a higher amount of music dreams. About 6% of all remembered dreams contained music, and the frequency was significantly higher when the participants spent time with music activities in waking like singing, playing an instrument, or listening actively to music—supporting the continuity hypothesis. In addition, music dreams were associated with more positive emotions. Future research should study the effects of music in waking on music in dreams over a longer period of time (dream diaries), as well as the dreams of professional musicians.

In professional settings gossipers are more likely to share positive and non-malicious gossip than negative and malicious one; gossipers tend to purposely plan the content to be shared by considering the target-receiver interpersonal closeness

Are we truly wicked when gossiping at work? The role of valence, interpersonal closeness and social awareness. Vito Tassiello, Sara Lombardi, Michele Costabile. Journal of Business Research, Volume 84, March 2018, Pages 141-149. https://doi.org/10.1016/j.jbusres.2017.11.013

Highlights
•    Gossip is a form of conversation that involves three actors simultaneously: the gossiper, the receiver, and the target.
•    In professional settings gossipers are more likely to share positive and non-malicious gossip than negative and malicious one.
•    Gossipers tend to purposely plan the content to be shared by considering the target-receiver interpersonal closeness.

Abstract: This paper questions the belief that gossip is always damaging and that people are more interested in negative than in positive information about others. Starting from this, we seek to understand whether a certain valenced gossip (positive vs. negative and malicious vs. non-malicious) is more likely to be spread in the workplace. We test this relationship through three experimental studies by considering the moderating effect of the social linkages among the actors involved in the gossip. We found that positive and non-malicious gossip are more likely to be shared with co-workers especially when the gossip object belongs to the receiver's social group and when the gossiper reckons that the receiver may verify the news heard. We interpret these results with the lens of impression management, in that people transmit certain gossip to their co-workers with the aim of gaining social status and reputation within their organization, fostering their social bonds.

How our brains may change as a function of systematic changes in our environments: We offer some initial predictions for changes in neural structure and function that may occur in the coming decades

Varnum, Michael E. W., PhD, and Ryan S. Hampton. 2018. “Cultural Changes in Neural Structure and Function.” PsyArXiv. July 27. doi:10.31234/osf.io/52eg3

Abstract: Human cultures are not static. An emerging body of research has documented cultural changes in a wide variety of behaviors, psychological tendencies, and cultural products. Increasingly, this field has also begun to test hypothesis regarding the causes of these changes and to create forecasts for future patterns of change. Yet to date, the question of how our brains may change as a function of systematic changes in our environments has received relatively little attention and scant empirical testing. In the present chapter we begin by reviewing the literature on cultural change, including Varnum and Grossmann’s program of research using a behavioral ecology framework to understand patterns of cultural change. Next we offer some initial predictions for changes in neural structure and function that may occur in the coming decades. Finally, we offer some ideas about how empirical research testing these predictions might be conducted and discuss challenges and opportunities for extending the study of cultural change to neuroscience.

Thursday, July 26, 2018

Unintended Consequences of Eliminating Tax Havens: Shifting investment abroad, reducing domestic employment

Unintended Consequences of Eliminating Tax Havens. Juan Carlos Suárez Serrato. NBER Working Paper No. 24850, July 2018. www.nber.org/papers/w24850

JEL No. F23,H25,H26,H32,J23

ABSTRACT: We show that eliminating firms’ access to tax havens has unintended consequences for economic growth. We analyze a policy change that limited profit shifting for US multinationals, and show that the reform raised the effective cost of  investing in the US. Exposed firms respond by reducing global  investment and  shifting investment abroad — which lowered their domestic investment by 38% — and by reducing domestic employment by 1.0 million jobs. We then show that the costs of eliminating tax havens are persistent and geographically concentrated, as more exposed local labor markets experience declines in employment and income growth for over 15 years. We discuss implications of these results for other efforts to limit profit shifting, including new taxes on intangible income in the Tax Cuts and Jobs Act of 2017.

Happiness Scales: The findings in the literature are highly dependent on one's beliefs about the underlying distribution of happiness in society, or the social welfare function chosen; any conclusions derived rely on the assumption that all individuals report their happiness in the same way

The Sad Truth About Happiness Scales: Empirical Results. Timothy N. Bond, Kevin Lang. NBER Working Paper No. 24853, July 2018. www.nber.org/papers/w24853

Abstract: We replicate nine key results from the happiness literature: the Easterlin Paradox, the ‘U-shaped’ relation between happiness and age, the happiness trade-off between inflation and unemployment, cross-country comparisons of happiness, the impact of the Moving to Opportunity program on happiness, the impact of marriage and children on happiness, the ‘paradox’ of declining female happiness, and the effect of disability on happiness. We show that none of the findings can be obtained relying only on nonparametric identification. The findings in the literature are highly dependent on one's beliefs about the underlying distribution of happiness in society, or the social welfare function one chooses to adopt. Furthermore, any conclusions reached from these parametric approaches rely on the assumption that all individuals report their happiness in the same way. When the data permit, we test for equal reporting functions, conditional on the existence of a common cardinalization from the normal family. We reject this assumption in all cases in which we test it.

Postcoital Dysphoria: Prevalence and Correlates among Males

Postcoital Dysphoria: Prevalence and Correlates among Males. Joel Maczkowiack & Robert D Schweitzer. Journal of Sex & Marital Therapy, https://doi.org/10.1080/0092623X.2018.1488326

Abstract: Consensual sexual activity is believed to be associated with a positive emotional experience, however, Postcoital Dysphoria (PCD) is a counter-intuitive phenomenon characterized by inexplicable feelings of tearfulness, sadness, or irritability following otherwise satisfactory consensual sexual activity. Prevalence of PCD has been reported among females, but not among males. The present study utilized an anonymous online questionnaire to examine the prevalence and correlates of PCD amongst an international sample including 1,208 male participants. Forty one percent reported experiencing PCD in their lifetime and 20% reported experiencing PCD in the previous four weeks. Between 3 - 4% of the sample reported experiencing PCD on a regular basis. PCD was found to be associated with current psychological distress, childhood sexual abuse, and several sexual dysfunctions. Results indicate that the male experience of the resolution phase may be far more varied, complex, and nuanced than previously thought and lay a foundation for future research investigating PCD among males. Findings have implications for therapeutic settings as well as the general discourse regarding the male sexual experience.

Key words: Dysphoria, Postcoital, Gender, Males, Resolution

Most Recent Sexual Event: Respondents younger than 30 were significantly more likely to indicate they did not kiss because kissing would have been too intimate with their partner

Kissing, Cuddling, and Massage at Most Recent Sexual Event: Findings from a U.S. Nationally Representative Probability Sample. Debby Herbenick et al. Journal of Sex & Marital Therapy, https://doi.org/10.1080/0092623X.2018.1494648

Abstract: Using data from the 2014 National Survey of Sexual Health & Behavior, a probability survey of Americans aged 14+, we assessed the prevalence and correlates of kissing, cuddling, and massage during 1493 individuals’ most recent sexual event from the past year. Most respondents reported kissing (87%) and cuddling (70%); fewer (23%) reported massage. Each was significantly associated with age, education, and relationship structure. Respondents younger than 30 were significantly more likely to indicate they did not kiss because kissing would have been too intimate with their partner. Only cuddling was significantly associated with event-level emotional intimacy and sexual pleasure.

Keywords: kissing, cuddling, massage, affection, population-based sexual behavior

Sexual behavior/experience was predicted by body fat percentage; in men, fantasy was related to total self-concept; sexual behavior/experience was related to likeability; in women, arousal was predicted by cardiovascular endurance; total self-concept was related to both orgasm and sex drive/desire

An investigation of the relationship between physical fitness, self-concept, and sexual functioning. LM Jiannine, J Educ Health Promot. 2018 May 3;7:57. doi: 10.4103/jehp.jehp_157_17. eCollection 2018.

Abstract
BACKGROUND: Obesity and inactivity have led to an increasing number of individuals with sexual dysfunctions (43% of women; 31% of men). Small bouts of exercise can drastically improve sexual functioning. Thus, the present study is designed to examine the effects of physical fitness and self-concept on sexual functioning.

MATERIALS AND METHODS: Fitness assessments and questionnaires were administered to 133 participants between the ages of 18 and 50 years. Physical fitness was assessed through body composition, cardiovascular endurance, muscular strength, and muscular endurance. Self-concept was presented as a total self-concept score and as six individual concepts of self. Sexual function was presented as both an aggregate score and five separate constructs of sexual functioning - fantasy/cognition, arousal, orgasm, behavior/experience, and drive/desire.

RESULTS: The results indicated that sexual behavior/experience was predicted by body fat percentage. In men, fantasy was related to total self-concept; sexual behavior/experience was related to likeability. In women, arousal was predicted by cardiovascular endurance. Total self-concept was related to both orgasm and sex drive/desire. Power and muscular strength were significantly related to number of sexual partners in women but not men.

CONCLUSIONS: The present study adds to the growing body of evidence indicating a positive relationship between physical fitness and sexual health. Individuals with sexual dysfunctions, particularly women, who are not persuaded by the currently publicized benefits of physical activity, may be inclined to exercise to improve sexual functioning.

KEYWORDS: Exercise; physical fitness; self-concept; sexual behavior; sexual functioning

Perceived physical strength in men is attractive to women but may come at a cost to ejaculate quality

Perceived physical strength in men is attractive to women but may come at a cost to ejaculate quality. Yong Zhi Foo et al. Animal Behaviour, Volume 142, August 2018, Pages 191-197. https://doi.org/10.1016/j.anbehav.2018.06.019

Highlights
•    Physical strength is negatively associated with ejaculate quality in men.
•    Physical strength also predicts male mating success.
•    Attractiveness explains the strength – mating success relationship.
•    Male strength increases attractiveness at a cost to ejaculate quality.
•    Our results reveal a trade-off between pre- and post mating sexual selection in men.

Abstract: Studies of sexual selection acting on physical strength in humans have focused mostly on its role in premating male–male competition. Recent theoretical frameworks suggest that male strength could be subject to trade-offs with postmating sperm competitiveness. Here, we examined whether male strength is linked to ejaculate quality. We also asked whether strength is attractive to women and affects male self-reported mating success. Perceived strength was negatively associated with ejaculate quality as predicted by the trade-off hypothesis. Perceived strength positively predicted attractiveness and both perceived strength and attractiveness shared similar variance in predicting self-reported mating success. Our findings indicate that despite the benefits to premating sexual selection, having greater strength may come at a cost to sperm competitiveness.

Wednesday, July 25, 2018

Children by the age of 6 begin to value ideas over labor; adults value the contribution of the laborer more than the contribution of the idea giver, even when examiners were idea givers; laborers receive more praise for positive outcomes, but less blame for negative outcomes, relative to idea givers

Burgmer, P., Forstmann, M., & Stavrova, O. (2018). Ideas are cheap: When and why adults value labor over ideas. Journal of Experimental Psychology: General. http://dx.doi.org/10.1037/xge0000473

Abstract: What do people value about a creation: the idea behind it or the labor needed for its implementation? Recent developmental research suggests that children by the age of 6 begin to value ideas over labor. Yet, much less is known about whether adults similarly attribute a higher value to ideas and idea givers than to labor and idea executors. In seven studies (N = 1,463), we explored the relative valuation of ideas versus labor in adults, its mechanisms and boundary conditions. Participants learned about an idea giver and a laborer who collaborated to create a product and indicated who deserves ownership and monetary compensation for the product. Contrary to what has been reported for children, Studies 1a–1c found that participants valued the contribution of the laborer more than the contribution of the idea giver. This labor-valuation effect emerged even when participants themselves were idea givers (Study 1b), and it was replicated across different populations (including legal professionals, Study 1c) and contexts (e.g., art works and businesses, Study 2). Studies 3a and 3b established perceived effort as a central psychological process behind the labor-valuation effect. Finally, Study 4 extended the effect to the realm of praise and blame judgments, showing that laborers receive more praise for positive outcomes, but less blame for negative outcomes, relative to idea givers. The current findings may provide a useful framework for understanding the role of effort in lay people’s valuation of ideas and labor, thereby bridging research on creativity, effort, and valuation judgments.

Mate Choice Copying in Humans: Women were more likely to rate male targets as more desirable when presented alongside a female while no obvious effects were detected with male choice

Mate Choice Copying in Humans: a Systematic Review and Meta-Analysis. Amany Gouda-Vossos et al. Adaptive Human Behavior and Physiology, https://link.springer.com/article/10.1007/s40750-018-0099-y

Abstract
Objective: Mate choice copying (MCC) is a type of non-independent mate choice where the ‘probability of acceptance’ of a potential mate increases if they are observed to be chosen by others first. The phenomenon was first demonstrated in several non-human taxa, with studies on humans conducted shortly after. The effect has been consistently documented among women choosing men (female choice), with mixed results among men choosing women (male choice). To understand and test the overall level of support for MCC in humans, we conducted a systematic review and meta-analysis, including a sensitivity analysis for publication bias.

Methods: We found that the two most commonly used methods of studying MCC in humans involved either the ‘addition’ of a cue (opposite sex other) or the ‘augmentation’ of cues (manipulating ‘mate quality’ of opposite sex other). We performed separate meta-analyses for these two approaches, splitting each into male choice and female choice.

Results: Women were more likely to rate male targets as more desirable when presented alongside a female while no obvious effects were detected with male choice. These sex differences disappeared in studies that ‘augment’ cues, as both sexes rated targets as more attractive when in the presence of more desirable others. We also detected high levels of heterogeneity in effect sizes and a moderate publication bias in favor of positive reports of MCC.

Conclusions: Our results provide clarification for documented sex differences (or lack thereof) in human MCC. We also discuss the importance of method consistency in studies that transfer ideas from non-human to human behavioral studies, highlighting replication issues in the light of the publication crisis in psychological science.


The more positive (excited, interested, or happy) participants felt after one speed-dating interaction partner, the less attracted they were toward a new interaction partner, & the more negative they felt (irritated or bored), the more attracted they were

The impact of emotions on romantic judgments. Sequential effects in a speed-dating study. Laura Sels et al. Journal of Social and Personal Relationships, https://doi.org/10.1177/0265407518789288

Abstract: How do our feelings impact the romantic judgments and decisions we make? In a speed-dating context, where people have to judge potential romantic partners sequentially, we investigated whether and how participants’ prior affective state guided romantic desire toward and actual choice for an interaction partner. We found evidence for contrast effects, meaning that romantic judgments contrasted with the affective states participants were in at the start of a new interaction. The more positive (excited, interested, or happy) participants felt after one interaction partner, the less attracted they were toward a new interaction partner, and the more negative they felt (irritated or bored), the more attracted they were. The effect of negative emotions (NEs) was primarily visible in men, for whom more prior NEs even increased the chance of choosing an interaction partner at the end of the evening. The effect of positive emotions (PEs), however, had faded away when people chose their date at the end. Additional analyses revealed that specific emotions showed differential effects on romantic desire and actual choice and that contrast effects were mediated but not fully explained (at least in the case of PEs) by desire toward the previous interaction partner.

Keywords: Dating, emotion, feelings, judgment and decision-making, romantic attraction

Women are more likely to use social media in a conformist and protective way whereas men have a higher probability to be provocative; subjective life satisfaction more powerfully predicts provocative use compared to age or education

Exploring Selective Exposure and Selective Avoidance Behavior in Social Media. Sanna Malinen, Aki Koivula, Teo Keipi, Ilkka Koiranen. SMSociety '18 Proceedings of the 9th International Conference on Social Media and Society, Pages 350-354. https://dl.acm.org/citation.cfm?id=3217943

Abstract: This study investigates social media users' preferences of encountering or actively avoiding undesired content and conflicts in social interaction with others. Based on a nationwide survey (N=3706) conducted in Finland and using principal component analysis, we identify three different types of social media use in relation to online information sharing and social interaction: conformist, provocative and protective. We then modelled those variations according to demographic variables and subjective life satisfaction. We found that women are more likely to use social media in a conformist and protective way whereas men have a higher probability to be provocative. We also found that younger and more educated people have a higher probability to use social media in a conformist and protective way. Finally, we suggest that subjective life satisfaction more powerfully predicts provocative use compared to age or education.

Monday, July 23, 2018

I Can Smell Them: People with more extreme political attitudes are better in inferring political affiliation from politicians' faces, regardless whether the politicians and perceivers are from the same or different countries

Interpersonal accuracy in a political context is moderated by the extremity of one's political attitudes. Dominique Muller, Florian Delmas, Michaela Wänke. Journal of Experimental Social Psychology, Volume 79, November 2018, Pages 95-106. https://doi.org/10.1016/j.jesp.2018.07.001

Highlights
•    People with more extreme political attitudes are better in inferring political affiliation from politicians´ faces.
•    Extremity can be seen as a facet of attitude strength, but other facets of attitude strength are not related to accuracy.
•    The findings hold regardless whether the politicians and perceivers are from the same or different countries.

Abstract: The political orientation of others can be perceived above chance level from looks alone. However, the effect is usually small and there is considerable interpersonal variance. We propose that the ability to accurately perceive others' political orientation is highest for those who hold more extreme political views themselves, as compared to people with more moderate views. This is because more extreme persons have a higher need to establish clear group boundaries and distinguish between political allies and adversaries. In six studies we investigate the proposed relationship, using participants from three different countries and two different sets of politicians as targets. In line with our hypothesis, attitude extremity was associated with higher accuracy. The robustness of our findings is supported by a small-scale meta-analysis over our studies. An alternative account that attitude strength in general – of which attitude extremity is a sub-facet – would lead to higher accuracy was not supported. Implications and suggestions for future research on interpersonal accuracy are discussed.

Extramarital affairs tend to make people happy, helping to be in love & to have at least biweekly sexual events with the outside partner; and even after the outside partnership ends, there is a higher life satisfaction rating than before the outside partnership

Having Your Cake and Eating It, Too: Factors Impacting Perception of Life Satisfaction During Outside Partnerships. Alicia M. Walker. Sexuality & Culture, https://link.springer.com/article/10.1007/s12119-018-9545-z

Abstract: Considering both the prevalence of infidelity and the preoccupation in the U.S. with achieving personal happiness, the question of whether participating in affairs increases perception of life satisfaction is a relevant one. This study utilized a sample population of married individuals specifically seeking extramarital sexual encounters (n = 1070) and investigated those factors which influence the individual’s overall perception of life satisfaction before, during, and after their affairs. Findings indicate that while affairs do tend to make respondents happy, a number of factors influence perception of life satisfaction during an affair, including a belief that an outside partner is required to remain in a primary partnership, a desire to remain in the primary partnership, at least biweekly sexual events with the outside partner, a belief that the individual loves their outside partner, and seeking out the partnership due to sexual dissatisfaction within the primary partnership. There was also a gender effect. A surprising finding was that even after the outside partnership ends, respondents reported a higher life satisfaction rating than before the outside partnership.

Female Eye Attractiveness – Where Beauty Meets Science

Female Eye Attractiveness – Where Beauty Meets Science. Martin Gründl et al. Journal of Cranio-Maxillofacial Surgery, https://doi.org/10.1016/j.jcms.2018.05.034

Summary
Introduction: While periorbital and -ocular surgery ranks amongst the most frequently performed plastic surgical procedures, only scarce information exists regarding the contributing factors of ageing and its systematic anatomic assessment. The presented study, based on measuring distinct physical landmarks, aimed to gather data to provide a foundation of in-depth periorbital analysis in order to more clearly define female eye attractiveness.

Methods: 80 probands (age range: 30 to 50 years, M = 38.4±6.5 years) were asked to judge 60 standardized high-resolution digital pictures of female eye regions in respect to the perceived age (in years) and attractiveness (7-point Likert scale). All photographs were objectively evaluated and measured utilizing a total of 38 distinct landmarks. The data was analyzed by calculating correlations between relevant measured eye area parameters and mean attractiveness ratings including age estimations.

Results: Overall, it was found that several specific eye shape features correlate with attractiveness and perceived age. For instance, large visible height of the iris and large upward and lateral inclination of both eye axis and eyebrows correlated moderately to strongly with attractiveness (p<0 .05="" br="">
Conclusion: Regarding the female eye, there exist distinct periorbital anatomic features and landmarks which contribute to a youthful appearance and attractiveness. Knowledge regarding these facts may serve as an important guideline for pre- and post-operative patient analysis.

Participants (n = 103) interact with a researcher in a testing room that imposed low or high perceptual load. Midway through the conversation, the researcher was replaced by another person. Thirty‐nine percent of participants failed to detect the change

Perceptual load affects change blindness in a real‐world interaction. Gillian Murphy, Lisa Murphy. Applied Cognitive Psychology, https://doi.org/10.1002/acp.3441

Summary: Change blindness is the striking inability to detect seemingly obvious changes that occur between views of a scene. The current study assessed perceptual load as a factor that may affect change blindness for human faces. The study had participants (n = 103) interact with a researcher in a testing room that imposed low or high perceptual load. Midway through the conversation, the researcher was replaced by another person. Thirty‐nine percent of participants failed to detect the change. There was a significant effect of perceptual load, with greater change detection under low load (71%) than high load (52%). This research suggests that the perceptual load imposed by a task may have a significant effect on the likelihood of change blindness and ought to be considered in future research.

People consistently remember being more generous in the past than they actually were; when people perceive their own actions as selfish, they can remember having acted more equitably, thus minimizing guilt and preserving their self-image

Motivated misremembering: Selfish decisions are more generous in hindsight. Ryan W Carlson et al. https://psyarxiv.com/7ck25/

Significance statement: Fairness is widely endorsed in human societies, but less often practiced. Here we demonstrate how memory distortions may contribute to this discrepancy. Across three experiments (N = 1005), we find that people consistently remember being more generous in the past than they actually were. We show that this effect occurs specifically for individuals whose decisions fell below their own fairness standards, irrespective of how high or low those standards were. These findings suggest that when people perceive their own actions as selfish, they can remember having acted more equitably, thus minimizing guilt and preserving their self-image.

Abstract: People often prioritize their own interests, but also like to see themselves as moral. How do individuals resolve this tension? One way to both maximize self-interest and maintain a moral self-image is to misremember the extent of one’s selfishness. Here, we tested this possibility. Across three experiments, participants decided how to split money with anonymous partners, and were later asked to recall their decisions. Participants systematically recalled being more generous in the past than they actually were, even when they were incentivized to recall accurately. Crucially, this effect was driven by individuals who gave less than what they personally believed was fair, independent of how objectively selfish they were.  Our findings suggest that when people’s actions fall short of their own personal standards, they may misremember the extent of their selfishness, thereby warding off negative emotions and threats to their moral self-image.

Key Words: memory, motivation, morality, generosity, decision-making

Sunday, July 22, 2018

The anger group showed higher levels of aggression and status seeking, with the moderator effect of anger intensity; also showed higher dominance scores, differing significantly from the fear, sadness, and/or control groups

Effects of anger on dominance-seeking and aggressive behaviors. João Carlos Centurion Cabral, Rosa Maria Martins de Almeida. Evolution and Human Behavior, https://doi.org/10.1016/j.evolhumbehav.2018.07.006

Abstract: Anger may have evolved to orchestrate social bargaining behaviors, which ultimately can lead to establishment of dominance hierarchies. Although the relationship between anger and dominance has strong empirical support, most studies have focused on visual cues of dominance. Across two experiments, we tested the hypothesis that anger increases dominance-seeking and agonistic behaviors in those who feel it. In the first experiment (n = 82), we induced anger through a hostile mock debate and measured corrugator electromyographic activity, testosterone and cortisol levels, status-seeking tendency, and aggression using behavioral tasks. Compared with the control group, the anger group showed higher levels of aggression and status seeking, with the moderator effect of anger intensity. In the second experiment (n = 162), anger, fear, sadness, and neutral state were induced by film clips, after which dominance-related behavioral tendencies were assessed. The anger group showed higher dominance scores, differing significantly from the fear, sadness, and/or control groups. These findings reinforce the notion that feelings of anger can cause an increase in status-seeking and agonistic behaviors, leading to possible action tendencies for the establishment of dominance hierarchies.

Keywords: Anger, Dominance, Aggression, Emotion, Steroid hormones

Why do angry people overestimate their intelligence? Neuroticism as a suppressor of the association between Trait-Anger and subjectively assessed intelligence

Why do angry people overestimate their intelligence? Neuroticism as a suppressor of the association between Trait-Anger and subjectively assessed intelligence. Marcin Zajenkowski, Gilles E.Gignac. Intelligence, Volume 70, September–October 2018, Pages 12-21. https://doi.org/10.1016/j.intell.2018.07.003

Highlights
•    Trait-Anger and Neuroticism are substantially inter-correlated positively.
•    Trait-Anger is positively related to subjectively assessed intelligence (SAI).
•    Neuroticism is negatively related to SAI.
•    Neuroticism suppresses the association of anger and SAI.
•    The effects hold even after controlling for objective intelligence.

Abstract: Trait-Anger and Neuroticism are substantially inter-correlated positively. However, there is some theoretical and empirical research that supports the notion that Trait-Anger and Neuroticism are influenced by several processes differentially. For instance, Trait-Anger is linked to optimistic bias, increased sense of control, approach motivation and high Narcissism. In contrast, Neuroticism correlates with pessimism, low sense of control, withdrawal motivation and low Narcissism. Building on these previous findings, we hypothesized that Trait-Anger and Neuroticism would be positively and negatively, respectively, associated with subjectively assessed intelligence (SAI). Furthermore, we expected that these two traits would act as mutual suppressors in predicting SAI. The results of two studies (ns = 303 and 225) supported our hypotheses. Trait-Anger was positively and Neuroticism negatively related to SAI, even after controlling for objective intelligence. These results are consistent with previous research which suggests that SAI is more substantially associated with personality than objective intelligence. Additionally, in study 2, we found that Narcissism mediated (partially) the relationship between Trait-Anger and SAI. In the discussion, we suggest that there might be two faces of Trait-Anger: one related to anxiety and one to overconfidence. Finally, a potential role of intelligence positive illusions in Trait-Anger is proposed.

Living in human environments help to develop motor skills, embodied cognition, & the use of objects to extend cognition in the animals, so the time needed for foraging for food is reduced, & furnishes opportunities for social learning, including emulation

Cheng, K., & Byrne, R. W. (2018). Why human environments enhance animal capacities to use objects: Evidence from keas (Nestor notabilis) and apes (Gorilla gorilla, Pan paniscus, Pongo abelii, Pongo pygmaeus). Journal of Comparative Psychology, http://dx.doi.org/10.1037/com0000121

Abstract: Formal training programs, which can be called education, enhance cognition in human and nonhuman animals alike. However, even informal exposure to human contact in human environments can enhance cognition. We review selected literature to compare animals’ behavior with objects among keas and great apes, the taxa that best allow systematic comparison of the behavior of wild animals with that of those in human environments such as homes, zoos, and rehabilitation centers. In all cases, we find that animals in human environments do much more with objects. Following and expanding on the explanations of several previous authors, we propose that living in human environments and the opportunities to observe and manipulate human-made objects help to develop motor skills, embodied cognition, and the use of objects to extend cognition in the animals. Living in a human world also furnishes the animals with more time for such activities, in that the time needed for foraging for food is reduced, and furnishes opportunities for social learning, including emulation, an attempt to achieve the goals of a model, and program-level imitation, in which the imitator reproduces the organizational structure of goal-directed actions without necessarily copying all the details. All these factors let these animals learn about the affordances of many objects and make them better able to come up with solutions to physical problems

Saturday, July 21, 2018

Gains vs Losses: Anticipation is associated with time preference, such that the more people enjoy anticipating an event, the more they prefer to delay it, & the more they dread it, the more they prefer to accelerate it

Kisses vs. shocks: Anticipation asymmetries explain time preferences for gains vs. losses. David J. Hardisty, Shane Frederick, Elke U. Weber. Under review. http://davidhardisty.info/downloads/Dread.Manuscript.31.docx

Abstract: The dread of future losses weighs more heavily than the pleasure of anticipating future gains, even after controlling for loss aversion. This happens because waiting for a gain is a mixed emotional experience that is both pleasurable (due to savoring) and painful (due to impatience), whereas waiting for a loss is a more unidimensionally painful experience (dread). Anticipation is associated with time preference, such that the more people enjoy anticipating an event, the more they prefer to delay it, and the more they dread it, the more they prefer to accelerate it. In combination, these findings explain and mediate the "sign" effect in discounting, i.e., the fact that losses are discounted less than gains.

Keywords: intertemporal choice, delay discounting, framing, affect

Maternal pregnancy exposures are assumed to affect offspring health; other factors like paternal & postnatal exposures are also likely to be important, but maternal ones are assumed to be most important; we need to retain a critical perspective regarding this assumption

It's the mother!: How assumptions about the causal primacy of maternal effects influence research on the developmental origins of health and disease. Gemma C.Sharp, Deborah A.Lawlor, Sarah S.Richardson .Social Science & Medicine, https://doi.org/10.1016/j.socscimed.2018.07.035

Highlights
•    Many maternal pregnancy exposures are assumed to affect offspring health.
•    Other factors like paternal and postnatal exposures are also likely to be important.
•    Nevertheless, maternal pregnancy exposures are assumed to be most important.
•    We need to retain a critical perspective regarding this assumption.
•    Improving the causal evidence base and contextualising findings will help.

Abstract: Research on the developmental origins of health and disease (DOHaD) has traditionally focussed on how maternal exposures around the time of pregnancy might influence offspring health and risk of disease. We acknowledge that for some exposures this is likely to be correct, but argue that the focus on maternal pregnancy effects also reflects implicit and deeply-held assumptions that 1) causal early life exposures are primarily transmitted via maternal traits or exposures, 2) maternal exposures around the time of pregnancy and early infancy are particularly important, and 3) other factors, such as paternal factors and postnatal exposures in later life, have relatively little impact in comparison. These implicit assumptions about the “causal primacy” of maternal pregnancy effects set the agenda for DOHaD research and, through a looping effect, are reinforced rather than tested. We propose practical strategies to redress this imbalance through maintaining a critical perspective about these assumptions.

Rabbits may be able to detect conspecifics in their predators’ scats, thus leading them to, in the short term, avoid areas in which their terrestrial predators’ diet is based on conspecifics, probably as the result of them perceiving a higher risk of predation

European rabbits recognise conspecifics in their predators’ diets. Laura M. Prada, José Guerrero-Casado, Francisco S. Tortosa. acta ethologica, https://link.springer.com/article/10.1007/s10211-018-0295-6

Abstract: Rabbits can successfully avoid their enemies by evaluating the risk of predation. They have various defensive strategies, such as morphological adaptations and behaviours patterns, which enable them to perceive their predators and thus reduce the risk of predation. It is well documented that rabbits recognise the scats of terrestrial predators and avoid those areas in which they are present. However, few studies show whether the prey species can recognise the presence of congeners in carnivores’ scats, which would allow them to identify their predators in a more efficient manner. We have carried out a comparative analysis of the use of space made by rabbits on plots on which a neutral odour (water) or the odours of the ferrets’ scats that had consumed either rabbit or another mammal (beef) were applied. Our results showed a lower number of rabbit pellets on those plots containing predator odours than on the control plots. During the first 6 days after applying the first odour, the number of rabbit pellets was lower on plots on which rabbit had been included in the diet when compared with scats obtained from a beef diet. However, no differences between the two experimental plots were recorded during the third visit (9 days after applying the first odour). Our results suggest that rabbits may be able to detect congeners in their predators’ scats, thus leading them to, in the short term, avoid areas in which their terrestrial predators’ diet is based on conspecifics, probably as the result of them perceiving a higher risk of predation.

Males reversed their initial preference for larger females in the presence of a conspecific audience male because they recognized the audience male as a competitor and tried to deceive that male about their real mating preference

Test of the Deception Hypothesis in Atlantic Mollies Poecilia mexicana—Does the Audience Copy a Pretended Mate Choice of Others? Klaudia Witte et al. MDPI.com, http://www.mdpi.com/2079-7737/7/3/40

Abstract: Animals often use public information for mate-choice decisions by observing conspecifics as they choose their mates and then copying this witnessed decision.  When the copier, however, is detected by the choosing individual, the latter often alters its behavior and spends more time with the previously non-preferred mate. This behavioral change is called the audience effect. The deception hypothesis states that the choosing individual changes its behavior to distract the audience from the preferred mate. The deception hypothesis, however, only applies if the audience indeed copies the pretended mate choice of the observed individual. So far, this necessary prerequisite has never been tested. We investigated in Atlantic molly males and females whether, first, focal fish show an audience effect, i.e., alter their mate choices in the presence of an audience fish, and second, whether audience fish copy the mate choice of the focal fish they had just witnessed. We found evidence that male and female Atlantic mollies copy the pretended mate choice of same-sex focal fish. Therefore, a necessary requirement of the deception hypothesis is fulfilled. Our results show that public information use in the context of mate choice can be costly.

Keywords: sexual selection; public information; male mate choice; female mate choice; audience effect; mate-choice copying; social learning; eavesdropping; Atlantic molly; Poecilia mexicana

Secularity, religiosity, and health: Physical and mental health differences between atheists, agnostics, and nonaffiliated theists compared to religiously affiliated individuals

Secularity, religiosity, and health: Physical and mental health differences between atheists, agnostics, and nonaffiliated theists compared to religiously affiliated individuals. Joseph O.Baker, Samuel Stroope, Mark H.Walker. Social Science Research, https://doi.org/10.1016/j.ssresearch.2018.07.003

Abstract: Extensive literature in the social and medical sciences link religiosity to positive health outcomes. Conversely it is often assumed that secularity carries negative consequences for health; however, recent research outlining different types of secular individuals complicates this assumption. Using a national sample of American adults, we compare physical and mental health outcomes for atheists, agnostics, religiously nonaffiliated theists, and theistic members of organized religious traditions. Results indicate better physical health outcomes for atheists compared to other secular individuals and members of some religious traditions. Atheists also reported significantly lower levels of psychiatric symptoms (anxiety, paranoia, obsession, and compulsion) compared to both other seculars and members of most religious traditions. In contrast, physical and mental health were significantly worse for nonaffiliated theists compared to other seculars and religious affiliates on most outcomes. These findings highlight the necessity of distinguishing among different types of secular individuals in future research on health.

Friday, July 20, 2018

Mate value at a glance: Facial attractiveness reveals women's waist-to-hip ratio and men's household income

Mate value at a glance: Facial attractiveness reveals women's waist-to-hip ratio and men's household income. Ji-eun Shin, Eunkook M.Suh, DaykJang. Personality and Individual Differences. Volume 135, 1 December 2018, Pages 128-130. https://doi.org/10.1016/j.paid.2018.07.014

Abstract: Can people make valid inferences about the person's mate value by a glance of his/her face? Eighty-seven independent coders rated how attractive neutral facial pictures of 297 (152 males) undergraduate students were, after viewing each image for 3 s. The facial attractiveness rating significantly correlated with important sex-specific mate qualities. In case of female targets, facial attractiveness predicted their body shape (waist-to-hip ratio; WHR), whereas among males, it correlated with their household income. The results remained after controlling for the positive affectivity reflected in the facial image. It appears that sex-specific markers of mate value are implicitly ingrained in attractive facial features.

Lay people do not have stable, logically rigorous notions of free will & are strongly motivated to preserve free will and moral responsibility

Forget the Folk: Moral Responsibility Preservation Motives and Other Conditions for Compatibilism. Cory J Clark, Bo Winegard, Roy Baumeister. https://www.researchgate.net/publication/319944911

Abstract: For years, experimental philosophers have attempted to discern whether laypeople find free will compatible with a scientifically deterministic understanding of the universe. We argue that these attempts are misguided because (1) lay people do not have stable, logically rigorous notions of free will and (2) people are strongly motivated to preserve free will and moral responsibility. Seven studies support this hypothesis by demonstrating that a variety of logically irrelevant (but motivationally relevant) features influence compatibilist judgments. In Study 1, participants who were asked to consider the possibility that our universe is deterministic were more compatibilist than those not asked to consider this possibility, suggesting that compatibilism is particularly compelling when determinism poses potential threats to moral responsibility. In Study 2, participants who considered concrete instances of moral behavior found compatibilist free will more sufficient for moral responsibility than participants who were asked about moral responsibility more generally. In Study 3a, the order in which participants read free will and determinism arguments influenced their compatibilist judgments—and only when the arguments had moral significance: Participants were more likely to report that determinism was compatible with free will than that free will was compatible with determinism. In Study 3b, participants who read the free will argument first (the more compatibilist group) were particularly likely to confess that their beliefs in free will and moral responsibility and their disbelief in determinism influenced their conclusion. In Study 4, participants reduced their compatibilist beliefs after reading a passage that argued that moral responsibility can be preserved even in the absence of free will. Participants also reported that immaterial souls were compatible with scientific determinism, most strongly among immaterial soul believers (Study 5), and evaluated information about the capacities of primates in a biased manner favoring the existence of human free will (Study 6). These results suggest that people do not have one intuition about whether free will is compatible with determinism. Rather, people report that free will is compatible with determinism when desiring to uphold moral responsibility. Recommendations for future work are discussed.

Individuals low in cognitive resources are not more likely to follow partisan cues than are individuals high in cognitive resources; the highest level of cue receptivity is observed for those individuals who have both a strong social identification with their party & high cognitive resources

An Expressive Utility Account of Partisan Cue Receptivity: Cognitive Resources in the Service of Identity Expression. Yphtach Lelkes, Ariel Malka, Bert N. Bakker. http://cess.nyu.edu/wp-content/uploads/2018/02/Lelkes.pdf

Abstract: What motivates citizens to rely on partisan cues when forming political judgments? Extant literature offers two perspectives on this matter: an optimistic view that reliance on cues serves to enable adequate decision making when cognitive resources are low, and a pessimistic view that reliance on cues serves to channel cognitive resources to the goal of expressing valued political identities. In the present research we seek to further understanding of the relative importance of these two motives. We find that individuals low in cognitive resources are not more likely to follow partisan cues than are individuals high in cognitive resources.  Furthermore, we find the highest level of cue receptivity is observed for those individuals who have both a strong social identification with their party and high cognitive resources. This suggests that partisan cue receptivity more often involves a harnessing of cognitive resources for the goal of identity expression.

Keywords: Partisan Cues, Social Identity, Cognitive Reflection, Motivated

Women in committed relationships would be more likely to reveal their status to a potential copulation partner due to the man’s preference for short-term mating; a man would do conceal his being less able to provide time, commitment, & resources

Hughes, S. M., & Harrison, M. A. (2018). Women reveal, men conceal: Current relationship disclosure when seeking an extrapair partner. Evolutionary Behavioral Sciences, http://dx.doi.org/10.1037/ebs0000133

Abstract: This study examined sex differences in disclosing current, committed relationship status to potential extrapair copulation (EPC) partners. We hypothesized that women in a committed relationship would be more likely to reveal their relationship status to a potential EPC partner. When a woman reveals this information, it may appeal to a man’s evolved psychological preference for short-term mating, which increases his chance of reproduction without commitment. We also hypothesized that men in a committed relationship, in contrast, would be more likely to conceal their current relationship from a potential EPC partner. A committed man would be less able to provide time, commitment, and resources for which women have an evolved preference. The extrapair woman could sustain enormous costs should she bear offspring without his support. Responses from a heterosexual community sample of 322 women and 262 men (N = 584), with a diverse age range (M = 30.7, SD = 11.4), showed that women, compared with men, indeed indicated statistically more hypothetical and actual committed relationship status revelations to a potential EPC partner.

Compared to the “very happily” married, those “not too happy” in marriage were over 2x as likely to report worse health & almost 40% more likely to die over the follow-up period, & had equal or worse health & mortality risk than the never married/divorced/separated, or widowed

Marital Happiness, Marital Status, Health, and Longevity. Elizabeth M. Lawrence et al. Journal of Happiness Studies, https://link.springer.com/article/10.1007/s10902-018-0009-9

Abstract: Married individuals are healthier and live longer than those who are never married, divorced, or widowed. But not all marriages are equal: unhappy marriages provide fewer benefits than happy ones. This study examined health and longevity across a nationally representative sample of U.S. adults, combining measures of marital status and marital happiness to compare those who were “very happy” in marriage to those who were “pretty happy” in marriage, “not too happy” in marriage, never married, divorced or separated, or widowed. We employed the General Social Survey–National Death Index to illuminate the associations among marital status, marital happiness, general happiness, and self-rated health and mortality risk. Compared to individuals who were “very happily” married, those who were “not too happy” in marriage were over twice as likely to report worse health and almost 40% more likely to die over the follow-up period, net of socioeconomic, geographic, and religiosity factors. Those not too happy in marriage also had equal or worse health and mortality risk compared to those who were never married, divorced or separated, or widowed. Results further indicate that general happiness underlies much of the relationship between marital happiness and better health and longevity. The literature on the health and longevity benefits of marriage is well established, but our results suggest that individuals in unhappy marriages may be a vulnerable population. We conclude that subjective well-being and relationship quality contribute to the health benefits of marriage.

Heritability of Regional Brain Volumes in Large-Scale Neuroimaging and Genetic Studies: exhibit a symmetric pattern across left and right hemispheres, & are consistent in females & males

Heritability of Regional Brain Volumes in Large-Scale Neuroimaging and Genetic Studies. Bingxin Zhao et al. Cerebral Cortex, bhy157, https://doi.org/10.1093/cercor/bhy157

Abstract: Brain genetics is an active research area. The degree to which genetic variants impact variations in brain structure and function remains largely unknown. We examined the heritability of regional brain volumes (P ~ 100) captured by single-nucleotide polymorphisms (SNPs) in UK Biobank (n ~ 9000). We found that regional brain volumes are highly heritable in this study population and common genetic variants can explain up to 80% of their variabilities (median heritability 34.8%). We observed omnigenic impact across the genome and examined the enrichment of SNPs in active chromatin regions. Principal components derived from regional volume data are also highly heritable, but the amount of variance in brain volume explained by the component did not seem to be related to its heritability. Heritability estimates vary substantially across large-scale functional networks, exhibit a symmetric pattern across left and right hemispheres, and are consistent in females and males (correlation = 0.638). We repeated the main analysis in Alzheimer’s Disease Neuroimaging Initiative (n ~ 1100), Philadelphia Neurodevelopmental Cohort (n ~ 600), and Pediatric Imaging, Neurocognition, and Genetics (n ~ 500) datasets, which demonstrated that more stable estimates can be obtained from the UK Biobank.

Thursday, July 19, 2018

Big parts of Italy, Greece, Spain are quite like wide areas in China: Silent contempt for the existing rules within China is due to people not respecting the method for creating and establishing those rules

This post's title is mine.

The original post I based my comment on is a post about China and the US by Christopher Balding in Balding's World: Global Finance and Economics. July 17 2018. http://www.baldingsworld.com/2018/07/17/balding-out/

Excerpts:

I have been in a fair number of countries and China still remains the more foreign place that I continually have to figure out every day.  Other countries have been to in Asia, developed and developing, and even Africa seem less disorienting and culturally dissimilar.  This is both exhilarating, exciting, frustrating, amusing and tiring.  My wife and I would frequently joke that every day you lived in China you would see something you had never seen before.

One of the most interesting thing to me was to see how my thinking evolved over time in China.  Prior to coming, I was and still am a libertarian leaning professor.  I had not given a lot of thought to human rights either in the United States or in  China.  While many are aware of a variety of the cases that receive attention, I think what struck me is how this filters down into the culture.  There is a complete and utter lack of respect for the individual or person in China.  People do not have innate value as people simply because they exist.

This leads most directly to a lack of respect for the law/rules/norms.  One thing I began to realize over time is, while not German, how law, rule, and norm abiding Americans are with minimal fear of enforcement.  Cutting in line is considered extremely rude because there is a sense of fairness and that people have equal rights.  In China, line cutting is considered nearly standard operating procedure. There is a common and accepted respect for others even if just it is as simple as standing in line.

In a way, I sympathize with Chairman Xi’s emphasis on rule of law because in my experience laws/rules/norms are simply ignored.  They are ignored quietly so as not to embarrass the enforcer, however, frequently, the enforcer knows rules or laws are being ignored but so long as the breaker is not egregious, both parties continue to exist in a state of blissful ignorance.  Honesty without force is not normal but an outlier.  Lying is utterly common, but telling the truth revolutionary.

I rationalize the silent contempt for the existing rules and laws within China as people not respecting the method for creating and establishing the rules and laws.  Rather than confronting the system, a superior, or try good faith attempts to change something, they choose a type of quiet subversion by just ignoring the rule or law.  This quickly spreads to virtually every facet of behavior as everything can be rationalized in a myriad of ways.  Before coming to China, I had this idea that China was rigid which in some ways it is, but in reality it is brutally chaotic because there are no rules it is the pure rule of the jungle with unconstrained might imposing their will and all others ignoring laws to behave as they see fit with no sense of morality or respect for right.

I had a lawyer tell me about the corruption crackdown, and even most convicted of crimes, that people referred to them as “unlucky”.  As he noted, there was almost no concept of justice even if people recognized the person had done what they were accused of having done.  The discipline stemmed not from their behavior but they were cannon fodder for some game chosen by a higher authority.

China wrestles with these issues like clockwork every few years after a tragic incident goes viral.  A common one is when someone is run over by a car and pedestrians just step over the body until a family member finds the body.  The video goes viral, prompts a week of hand wringing, and then censors step in to talk about Confucianism and how the economy is growing.  There is no innate value given to human life as precious.

A friend of mine in China who is a Christian missionary, told me a story about a time he was invited to speak at the local English corner they had in the apartment development where locals would get together hopefully with foreigners and practice English. He was asked to speak on what is the meaning of life, perfect for a part time missionary. He said he knew what people would say having lived in China for sometime but even so was stunned at how deeply and rigidly held the belief that making money was the entire meaning of life. There was no value system.  There was no exogenously held right or wrong, only whether you made money.  With apologies to a bastardized Dostoevsky, with money as God, all is permissible.

I could talk at length about that what I have observed, but I am not a human rights expert and what type of cultural changes or evolution it engenders.  However, while the well known cases draw attention, these attitudes and responses set the tone for a culture where individuals, respect, and truth mean nothing.

This has impacted my broader thinking in that executive space (thinking of the United States but also applicable elsewhere) is that laws need to be enforced consistently not at the whim of the superior.  If the law exists it should be enforced and consistent, otherwise it should be removed.  Currently, the United States is going further and further in a direction where laws are applied inconsistently shifting from varying enforcement regimes under different executives.  Law is not law if the government can choose whether to enforce it. Law has become the whimsy of sovereigns prone to political fancy.

This applies as well to how everyone is treated.  From a President we may have reason to suspect of illegal activity to an immigrant fighting for asylum, all are innocent until proven guilty and treated humanely.  I see this pernicious cycle taking place from China in the United States where decency and humanity on all sides (I am not going to apportion blame here) is swallowed by shrill invectives that people then use to justify their own lack of decency in pursuit of whatever they believe to be right.  America will not return to its principles by partisans justifying increasingly coarse behavior and rhetoric.

[...]

One of the reasons principles matter is that each side feels locked in a death struggle. Principles are unwelcome to many because there are times we do not like those principles or where our side will lose if we abide by that principle. The principle matters more than the short term win or loss. All powers we demand can be used against us at some point. America needs to return to seeking to uphold the highest of principles knowing there will be times our side loses because we chose to uphold a principle.  In a democracy, you are going to lose based upon historical precedent, probably about 50% of the time. That is the point of democracy.  Rather than delusionaly believing in vast mandates, candidates should recognize that in recent history they have been elected on narrow margins and hew a more moderate path.

I think one of the great things about America that people forget is that it is an experiment.  It is an experiment like none other that is truly unique for any major country. There is no country in the world that is in such a state of constant flux and change from a macro-historical perspective. Wave after wave over the past few hundred years of immigrants that drive ambition and innovation are hallmarks.

Any large American city will have a higher foreign born population than the entirety of China.  America has one of the highest net migration rates of any major economy and accepts more immigrants than any other country.  Of major economies, only Canada and Germany are higher as a percentage of foreign born population share.  It is easy to focus on specific incidents that make the situation seem dire, but in reality America remains an enormously welcoming country to immigrants.

I think of an area where I know well academia and start ups.  The ability of foreign born academics to rise to a position of prominence or create a start up in China is virtually zero.  In the United States, Silicon Valley is rich with a foreign born population or the children of immigrants and the professor and deans ranks are filled with foreign born population.  The United States is in a continual state of its own internal flux but that is what the experiment is: a country not founded on blood or ideology but a shared destiny of values and principles that all men are created equal.

The United States has repeatedly failed and continues to fall short of its ideals but has shown a greater sense of self correction than almost any other.  In China you cannot talk about most of history, while in the United States there are constant reminders about failures and how to apply those lessons.  We must remember that it is an ongoing experiment of values we hold to be self evident, not an already attained ideal but a continual working out of what we believe.

[...]

In China, there are very few people who I witness live a testament of their belief.  Who knows if the Party member is a member because he believes in Marxism, Communism, Xi-ism, or simply wants a better apartment? Who knows if the person who claims to be a believer in democracy but complies with the Party actually believes that or just tells the foreigner?  Foreigners in China in positions of influence who claim to believe in human rights but collaborate with the Party to deny Chinese citizens rights need to answer for their actions. I have little idea what people in China believe but I know that if the Party ever falls, there will be more than a billion more people claiming they were closet democracy advocates.

We should never wish adversity upon ourselves, but recognize that US ideals and values are being tested. I have every confidence that American ideals will come out stronger but make no mistake, it is a trying time.  Sometimes you need to be tested in your beliefs to know those convictions hold beyond convenience or benefit.

One of my biggest fears living in China has always been that I would be detained.  Though I happily pointed out the absurdity of the rapidly encroaching authoritarianism, a fact which continues to elude so many experts not living in China, I tried to make sure I knew where the line was and did not cross it. There is a profound sense of relief to be leaving safely knowing others, Chinese or foreigners, who have had significantly greater difficulties than myself.  There are many cases which resulted in significantly more problems for them. I know I am blessed to make it out.

I leave China profoundly worried about the future of China and US China relations.  Most attention here has focused on the Thucydides Trap where conflict results from an established and a rising power.  This leaves out probably the most important variable not just the distinction between an established and a rising power but the values inherent within each state and the system they want to project defining relations between states and the citizenry to the state.

The United States under Trump and the GOP is facing a significant test and re-evaluation of its principles. However, I remain decidedly confident in the US to handle those tests.  The self correction nature of democracy is on clear display.  The best case scenario for the Trump administration is to minimize congressional losses with the very real possibility of losing control of the house. President Trump has lost more in the courts than he has won and is under investigations by law enforcement headed by registered Republicans. His own party has been unable to pass consequential legislation except for a tax cut.  While none of this confronts the international challenges facing the United States, it speaks to the evolutionary, self corrective nature of US democracy.

The United States continues to take the largest number of immigrants and rank as one of the most open economies and investment markets in the world, even for Chinese immigrants and businesses. [...]

Conversely, China is a rising power but probably more importantly is a deeply illiberal, expansionist, authoritarian, police state opposed to human rights, democracy, free trade, and rule of law.  Just as we need to consider the state, speed, and direction of change in the United States, China has been deeply illiberal authoritarian for many years, is becoming increasingly illiberal, and is accelerating the pace of change towards greater control.  It both puzzles and concerns me having lived in China for nearly a decade as a public employee to hear Polyanna statements from China “experts” in the United States who talk about the opening and reform of China or refuse to consider the values being promoted. [...]

The rise of China represents a clear and explicit threat not to the United States but to the entirety of liberal democracy, human rights, and open international markets.  We see the world slowly being divided into China supported authoritarian regimes of various stripes that support its creeping illiberalism across a range of areas.  The tragedy of modern American foreign policy is the history of active ignorance and refusal to actively confront the Chinese norm or legal violations. The Trump administration is utterly incapable of defending the values and assembling the coalition that would respond to American leadership as they face even greater threats from China.

The concern is not over Chinese access to technology to facilitate economic development for a liberal open state. The concern is over the use of technology to facilitate human rights violations and further cement closed markets.  That is a threat for which neither the United States or any other democracy loving country should apologize for.

I should note that I like many other am concerned about the level of government surveillance on citizenry.  However, equating Beijing to Washington in many of these specific issues is simply non-sensical authoritarian apologetics.  Let me just briefly run through some of the enormous differences. First, some have argued tech firms gather data which is true but does not distinguish what happens to the data. Unlike China, the US government does not have free access to all electronic data.  Second, China uses control over electronic communication in vastly draconian cyber dystopia ways compared to the wide range of opinions that are allowed online in the rest of the world.  By simple comparison, Winnie the Pooh is censored in China while in the United States the debate is over whether some information should be restricted that is deemed inaccurate. It is nothing less than authoritarian apologetics to attempt to equate the two in any serious manner.

It is profoundly misguided and short sighted to view the rise of China as tension arising either purely from rising economic development in a major state or as a bilateral conflict with the United States.  China represents a clear and present threat to liberal democracies, open markets, and international system nor do they even now attempt to hide this policy.  These tensions for the foreseeable future will only increase. I do not like the way Trump has handled his approach to China and the very valid concerns he raises about their practices, but I find it even more troubling the near total lack of any attempt to deal with these issue previous administrations and the surrogates have displayed for many years and continue to display. [...]

Stronger intellectual abilities are associated with greater cortical thickness (CT) and cortical volume (CV); in relation to measured intelligence, CT and CV are more relevant measures than cortical surface area or cortical gyrification

The Relationship Between General Intelligence and Cortical Structure in Healthy Individuals. Sahil Bajaj et al. Neuroscience, https://doi.org/10.1016/j.neuroscience.2018.07.008

Highlights
•    Stronger intellectual abilities are associated with greater cortical thickness (CT) and cortical volume (CV).
•    The neural basis of intellectual abilities extends beyond fronto-parietal brain regions.
•    In relation to measured intelligence, CT and CV are more relevant measures than cortical surface area or cortical gyrification.

Abstract: Considerable work in recent years has examined the relationship between cortical thickness (CT) and general intelligence (IQ) in healthy individuals. It is not known whether specific IQ variables (i.e., perceptual reasoning [PIQ], verbal comprehension IQ [VIQ], and full-scale IQ [FSIQ]) are associated with multiple cortical measures (i.e., CT, cortical volume (CV), cortical surface area (CSA) and cortical gyrification (CG)) within the same individuals. Here we examined the association between these neuroimaging metrics and IQ in 56 healthy adults. At a cluster-forming threshold (CFT) of p < 0.05, we observed significant positive relationships between CT and all three IQ variables in regions within the posterior frontal and superior parietal lobes. Regions within the temporal and posterior frontal lobes exhibited positive relationships between CV and two IQ variables (PIQ and FSIQ) and regions within the inferior parietal lobe exhibited positive relationships between CV and PIQ. Additionally, CV was positively associated with VIQ in the left insula and with FSIQ within the inferior frontal gyrus. At a more stringent CFT (p < 0.01), the CT–PIQ, CT–VIQ, CT–FSIQ, and CV–PIQ relationships remained significant within the posterior frontal lobe, as did the CV–PIQ relationship within the temporal and inferior parietal lobes. We did not observe statistically significant relationships between IQ and either CSA or CG. Our findings suggest that the neural basis of IQ extends beyond previously observed relationships with fronto-parietal regions. We also conclude that CT and CV may be more useful metrics than CSA or CG in the study of intellectual abilities.

Abbreviations
CFT cluster-forming threshold
CG cortical gyrification
CSA cortical surface area
CT cortical thickness
CV cortical volume
FSIQ full-scale IQ
IQ intelligence
PIQ perceptual reasoning
VIQ verbal comprehension IQ

Sunk costs are irrecoverable investments that should not influence decisions; decisions should be made on the basis of expected future consequences; but mice, rats, and humans show similar sensitivities to sunk costs in their decision-making, a vulnerability distinct from deliberation processes

Sensitivity to “sunk costs” in mice, rats, and humans. Brian M. Sweis et al. Science Jul 13 2018, Vol. 361, Issue 6398, pp. 178-181. DOI: 10.1126/science.aar8644

The impact of time wasted: The amount of time already spent on a task influences human choice about whether to continue. This dedicated time, known as the “sunk cost,” reduces the likelihood of giving up the pursuit of a reward, even when there is no indication of likely success. Sweis et al. show that this sensitivity to time invested occurs similarly in mice, rats, and humans (see the Perspective by Brosnan). All three display a resistance to giving up their pursuit of a reward in a foraging context, but only after they have made the decision to pursue the reward.

Abstract: Sunk costs are irrecoverable investments that should not influence decisions, because decisions should be made on the basis of expected future consequences. Both human and nonhuman animals can show sensitivity to sunk costs, but reports from across species are inconsistent. In a temporal context, a sensitivity to sunk costs arises when an individual resists ending an activity, even if it seems unproductive, because of the time already invested. In two parallel foraging tasks that we designed, we found that mice, rats, and humans show similar sensitivities to sunk costs in their decision-making. Unexpectedly, sensitivity to time invested accrued only after an initial decision had been made. These findings suggest that sensitivity to temporal sunk costs lies in a vulnerability distinct from deliberation processes and that this distinction is present across species.


Check also: The sunk-cost fallacy—pursuing an inferior alternative merely because we have previously invested significant, but nonrecoverable, resources in it—, a striking violation of rational decision making, can appear when costs are borne by someone other than the decision maker. https://www.bipartisanalliance.com/2018/05/from-2012-status-quo-maintenance-has.html

Dopamine: Its reward related function regulates the processes of energy consumption and acquisition in the body; thenergy-related book-keeping of the body at the physiological level is the common motif that links the many facets of dopamine and its functions

The many facets of dopamine: Toward an integrative theory of the role of dopamine in managing the body's energy resources. Srinivasa Chakravarthy et al. Physiology & Behavior, https://doi.org/10.1016/j.physbeh.2018.06.032

Highlights
•    We seek to present a conceptual synthesis of the manifold physiological functions of dopamine, and the reward system of the brain with which the molecule is closely associated.
•    We review the diverse role of dopamine as a reward signal, in regulation of appetite, circulation and energy management.
•    We propose a theoretical frame work that the functions of dopamine in neural and physiological domains can be linked through its actions vis a vis the reward system of the brain, as a part of an extensive energy management system of the body

Abstract: In neue roscience literature, dopamine is often considered as a pleasure chemical of the brain. Dopaminergic neurons respond to rewarding stimuli which include primary rewards like opioids or food, or more abstract forms of reward like cash rewards or pictures of pretty faces. It is this reward-related aspect of dopamine, particularly its association with reward prediction error, that is highlighted by a large class of computational models of dopamine signaling. Dopamine is also a neuromodulator, controlling synaptic plasticity in several cortical and subcortical areas. But dopamine's influence is not limited to the nervous system; its effects are also found in other physiological systems, particularly the circulatory system. Importantly, dopamine agonists have been used as a drug to control blood pressure. Is there a theoretical, conceptual connection that reconciles dopamine's effects in the nervous system with those in the circulatory system? This perspective article integrates the diverse physiological roles of dopamine and provides a simple theoretical framework arguing that its reward related function regulates the processes of energy consumption and acquisition in the body. We conclude by suggesting that energy-related book-keeping of the body at the physiological level is the common motif that links the many facets of dopamine and its functions.

Focusing on time (vs. money) increases happiness; having too little or too much time is linked to less happiness; to be happier, people should spend the time they have deliberately

It’s time for happiness. Cassie Mogilner. Current Opinion in Psychology, https://doi.org/10.1016/j.copsyc.2018.07.002

Highlights
•    Focusing on time (vs. money) increases happiness.
•    Having too little time is linked to less happiness.
•    Having too much time is also linked to less happiness.
•    To be happier, people should spend the time they have deliberately.

Abstract: Spotlighting the logistically and existentially foundational resource of time, this review identifies that the extent to which people focus on time, the amount of time people have, and the ways people spend their time all have a significant impact on happiness. This synthesis of the past decade of research on time and happiness advises that people should (1) focus on time (not money), (2) have neither too little nor too much time, and (3) spend the time they have deliberately.

Men displaying faster articulation rate and louder voices reported significantly more sexual partners; women who displayed relatively less breathy voices and shorter speech duration reported significantly fewer sexual partners

Human vocal behavior within competitive and courtship contexts and its relation to mating success. Alexandre Suire, Michel Raymond, Melissa Barkat-Defradas. Evolution and Human Behavior, https://doi.org/10.1016/j.evolhumbehav.2018.07.001

Abstract: Beyond the linguistic content of their speech, speakers of both sexes convey diverse biological and psychosocial information through their voices, which are important when assessing potential mates and competitors. However, studies investigating the relationships between mating success and acoustic inter-individual differences are scarce. In this study, we investigated such relationships in both sexes in courtship and competitive interactions—as they correspond to the two different types of sexual selection—using an experimental design based on a simulated dating game. We assessed which type of sexual selection best predicted mating success, here defined as the self-reported number of sexual partners within the past year. Our results show that only acoustic inter-individual differences in the courtship context for both men and women predicted their mating success. Men displaying faster articulation rate and louder voices reported significantly more sexual partners; in contrast, men displaying higher intonation reported a greater negative effect of roughness and breathiness on their mating success. Women who displayed relatively less breathy voices and shorter speech duration reported significantly fewer sexual partners. These novel findings are discussed in light of the mate choice context and the relative contribution of both types of sexual selection shaping acoustic features of speech.

Firearm-related violence are highly increasing in Sweden, mostly due togang-related crimes; knife/sharp weapon still most common Modus Operandi in homicides/attempted homicides; Gun Shot Wound to the head and thorax are most fatal

Firearm-related violence in Sweden – A systematic review. Ardavan Khoshnood. Aggression and Violent Behavior, https://doi.org/10.1016/j.avb.2018.07.008

Highlights
•    Firearm-related violence are highly increasing in Sweden.
•    Most firearm-related violence is contributed to gang-related crimes.
•    Knife/Sharp weapon still most common Modus Operandi in homicides/attempted homicides.
•    Gun Shot Wound to the head and thorax are most fatal.
•    Cause of Death in firearm-related violence are intracranial injuries and hypovolemia.

Abstract: Recent reports state that firearm-related violence is increasing in Sweden. In order to understand the trend of firearm-related violence in Sweden with regard to rate, modus operandi (MO) and homicide typology, and for which injuries and causes of death firearm-related violence is responsible, a systematic literature review was conducted. After a thorough search in different databases, a total of 25 studies published in Swedish and English peer-review journals were identified and thus analyzed. The results show that even though knives/sharp weapons continue to be the most common MO in a violent crime in Sweden, firearm-related violence is significantly increasing in the country and foremost when discussing gang-related crimes. Moreover, firearm-related homicides and attempted homicides are increasing in the country. The studies also show that a firearm is much more lethal than a knife/sharp weapon, and that the head, thorax and the abdomen are the most lethal and serious anatomical locations in which to be hit. It is principally the three largest cities of Sweden which are affected by the many shootings in recent years. The police have severe difficulties in solving firearm-related crimes such as homicide and attempted homicide, which is why the confidence and trust for the Swedish judicial system may be decreasing among the citizens. Several reforms have taken place in Sweden in the last few years, but their effect on firearm-related violence remains to be studied.