Wednesday, June 6, 2018

Dimensions of Subjective Age Identity Across the Lifespan

Lindner, Nicole M.,and Brian A Nosek 2018. “Dimensions of Subjective Age Identity Across the Lifespan”. PsyArXiv. June 6. doi:10.17605/OSF.IO/M2Y5R

Abstract: We examined how felt age and desired age differed from chronological age across the age span. With each passing Earth year, felt and desired age do grow older, it just takes longer for the year to go by. Past age 25 or so, subjective aging appears to occur on Mars, where one Earth decade equals only 5.3 Martian years. In some sense, our minds age more slowly than our bodies do.


Examined cortical gyrification associations with psychopathy in a sample of 716 incarcerated individuals; psychopathy was negatively associated with gyrification in the midcingulate cortex and superior parietal cortex

Abnormal cortical gyrification in criminal psychopathy. Tara A. Miskovich et al. NeuroImage: Clinical, https://doi.org/10.1016/j.nicl.2018.06.007

Highlights
•    We examined cortical gyrification associations with psychopathy in a sample of 716 incarcerated individuals.
•    Psychopathy was negatively associated with gyrification in the midcingulate cortex and superior parietal cortex.
•    Factor 1 scores were associated with reduced gyrification in the midcingulate cortex, but increased gyrification in bilateral occipital cortex.
•    These results may represent a vulnerability for psychopathy, which may help further elucidate the etiology of this disorder.

Abstract

Background: Psychopathy is a personality disorder characterized by interpersonal and emotional abnormalities (e.g., lack of empathy and guilt) and antisocial behavior. Psychopathy has been associated with a number of structural brain abnormalities, most notably in orbital frontal and anterior/medial temporal regions, that may underlie psychopathic individuals' problematic behaviors. Past research evaluating cortical structure in psychopathy has considered thickness and volume, but to date no study has investigated differences in cortical gyrification, a measure of cortical complexity thought to reflect early neurodevelopmental cortical connectivity.

Methods: We measured the local gyrification index (LGI) in a sample of 716 adult male inmates and performed a whole brain analysis assessing the relationship between LGI and total and factor scores on the Hare Psychopathy Checklist-Revised (PCL-R).

Results: PCL-R scores were negatively associated with LGI measures within the right hemisphere in the midcingulate cortex (MCC) and adjacent regions of the superior frontal gyrus as well as lateral superior parietal cortex. Additionally, PCL-R Factor 1 scores (interpersonal/affective traits) predicted less LGI within the right MCC and adjacent dorsomedial frontal cortex and greater LGI in bilateral occipital cortex. Scores on PCL-R Factor 2, indicating impulsivity and antisocial behaviors, did not predict LGI in any regions.

Conclusions: These findings suggest that psychopathy, particularly the interpersonal and affective traits, are associated with specific structural abnormalities that form during neurodevelopment and these abnormalities may underlie aberrant brain functioning in regions important in emotional processing and cognitive control.

Keywords: Psychopathy; Cortical folding; Local gyrification

Experts' features enable them to perform better than novices on complex tasks; features include superior long-term and working memory and quicker, better decisions; heritable variation in traits such as motivation and cognition can affect expertise

Animal expertise: mechanisms, ecology and evolution. Reuven Dukas. Animal Behaviour, https://doi.org/10.1016/j.anbehav.2018.05.010

Highlights
•    Experts' features enable them to perform better than novices on complex tasks.
•    Features include superior long-term and working memory and quicker, better decisions.
•    Expertise can affect animal ecology and evolution but data are mostly on humans.
•    Heritable variation in traits such as motivation and cognition can affect expertise.
•    We need long-term studies on animal expertise and its ecology and evolution.

Abstract: Expertise consists of the features that allow individuals with extensive experience on a given complex task to show superior performance on that task compared to novices. While expertise has been investigated mostly in humans, it is highly relevant for other species as well because it can have strong effects on fitness. Moreover, studying expertise in nonhumans can help us understand human expertise. Several features that distinguish experts within their domain of expertise from novices include (1) greater long-term memory, (2) larger capacity of working memory, (3) better ability to focus attention on the most relevant concurrent tasks, (4) superior ability to anticipate, perceive and comprehend the relevant elements in one's surroundings, (5) quicker and better decisions, and (6) faster and more coordinated motor movements. The development of expertise follows a characteristic pattern of gradual improvement in performance over extended periods devoted to practising a given complex task. Heritable variation in a few traits can affect the rate of expertise acquisition and its peak levels. These traits include motivation to practise, perseverance, basic cognitive abilities such as attention span, working memory capacity, learning rates and memory retention, and various physiological, anatomical and morphological features. Key environmental factors influencing expertise development are parental and social settings, which may encourage investment in the extended practice necessary for achieving superior performance on complex tasks. Future work on the evolutionary biology of expertise should focus on the yet unknown neurobiological mechanisms that underlie it, heritable variation in the traits that enable expertise and their genetic basis, further quantifications of expertise acquisition in natural settings, the fitness consequences of the traits that facilitate top expert performance, and the ecological and evolutionary consequences of expertise.

Keywords: cognition; evolution; expertise; heritability; learning; life history

Has evolution shaped us to fall in love, not just in judging our partners, but in becoming more lovable ourselves? Female sexual desire in courtship & newlywed phases decreases later, making men entering into a long-term commitment based on false assumptions about the amount of sex involved

The Mask of Love and Sexual Gullibility. Roy F. Baumeister, Jessica A. Maxwell, Geoffrey P. Thomas. sydneysymposium.unsw.edu.au/2018/chapters/BaumeisterSSSP2018.pdf

Abstract: Many people describe the time of being newly in love as one of life’s peak experiences. Years later, many are dismayed by the choices they made during love, and many people divorce after thinking they were to be married for life. How did they make such a grievous mistake? Traditional theory assumes that lovers are biased in judgments about their partners. This largely speculative essay suggests that evolution has shaped people to fall in love, not just in judging their partners, but in becoming more lovable themselves. Recent data indicate that female sexual desire during courtship and newlywed phases is often followed by a loss of sexual desire that undermines both spouses’ marital satisfaction. Men may therefore be gullible in terms of entering into a long-term commitment based on false assumptions about the amount of sex involved. This may serve as a useful model for the hypothesis that people become more lovable when in love.

On The Role of Affect in Gullibility: Can Positive Mood Increase, and Negative Mood Reduce Credulity?

On The Role of Affect in Gullibility: Can Positive Mood Increase, and Negative Mood Reduce Credulity? Joseph P. Forgas. sydneysymposium.unsw.edu.au/2018/chapters/ForgasSSSP2018.pdf

Abstract: The uncritical acceptance of false or misleading beliefs is often influenced by sub-conscious affective reactions. This chapter will describe some of the psychological mechanisms responsible for the biasing effects of affect and mood on gullibility and skepticism. A series of experimental studies will be presented showing that mild affective states can influence perceptions of truth, the likelihood to believe misleading information, the tendency to trust interpersonal messages, the detection of deception, and the tendency to see meaning in random or meaningless information. In addition to the influence of mild, temporary moods on gullibility, more enduring and stable affective reactions can also produce gullibility. The theoretical significance of these studies will be discussed, and the practical implications of affectively induced gullibility will be considered.

Large-prize winners experience sustained increases in overall life satisfaction that persist for over a decade and show no evidence of dissipating with time; effects on happiness and mental health are much smaller

Long-run Effects of Lottery Wealth on Psychological Well-being. Erik Lindqvist, Robert Östling, David Cesarini. NBER Working Paper No. 24667, http://www.nber.org/papers/w24667

Abstract: We surveyed a large sample of Swedish lottery players about their psychological well-being and analyzed the data following pre-registered procedures. Relative to matched controls, large-prize winners experience sustained increases in overall life satisfaction that persist for over a decade and show no evidence of dissipating with time. The estimated treatment effects on happiness and mental health are significantly smaller, suggesting that wealth has greater long-run effects on evaluative measures of well-being than on affective ones. Follow-up analyses of domain-specific aspects of life satisfaction clearly implicate financial life satisfaction as an important mediator for the long-run increase in overall life satisfaction.

Tuesday, June 5, 2018

Scientists, like all other men whose experiences have been limited to one pursuit, ... sometimes need to be restrained. Men of high scientific attainments are prone, in their love for technique, to lose sight of broad principles outside of their domain of thought

Statement by Pennsylvania Gov Samuel W Pennypacker, 1905. https://junkscience.com/2018/05/on-the-need-to-restrain-scientists/

I return herewith, without my approval Senate Bill No. 35, entitled “An Act for the prevention of idiocy.”

This bill has what may be called with propriety an attractive title. If idiocy could be prevented by an act of assembly, we may be quite sure that such an act would have long been passed and approved in this state, and that such laws would have been enacted in all civilized countries.

The subject of the act is not the prevention of idiocy, but it is to provide that in every institution in the state, entrusted with the care of idiots and imbecile children, a neurologist, a surgeon, and physician shall be authorized to perform an operation upon the inmates “for the prevention of procreation.”

What is the nature of the operation is not described but it is such an operation as they shall decide to be “safest and most effective.” It is plain that the safest and most effective preventing procreation would be to cut the heads off the inmates, and such authority is given by the bill to this staff of scientific experts. It is not probable that they would resort to this means for the prevention of procreation, but it is probable that they would endeavor to destroy some part of the human organism.

Scientists, like all other men whose experiences have been limited to one pursuit, and whose minds have been developed in a particular direction, sometimes need to be restrained. Men of high scientific attainments are prone, in their love for technique, to lose sight of broad principles outside of their domain of thought.
A surgeon may possible be so eager to advance in skill as to be forgetful of the danger to his patient. Anatomists may be willing to gather information by the infliction of pain and suffering upon helpless creatures, although a higher standard of conduct would teach them that it is far better for humanity to bear its own ills than to escape them by knowledge only secured through cruelty to other creatures.

This bill, whatever good might possibly result from it if its provisions should become a law, violates the principles of ethics.

These feeble-minded and imbecile children have been entrusted to the institutions by their parents or guardians for the purpose of training and instruction. It is proposed to experiment upon them, not for their instruction, but in order to help society in the future. It is to be done without their consent, which they cannot give, and without the consent of their parents or guardians, who are responsible for their welfare. It would be in contravention of the laws which have been enacted for the establishment of these institutions. These laws have in contemplation the training and the instruction of the children.

This bill assumes that they cannot be so instructed and trained. Moreover, the course it is proposed to pursue would have a tendency to prevent such training and instruction. Everyone knows, whether he be a scientist or an ordinary observer, that to destroy virility is to lessen the capacity, the energy and the spirit which lead to effort. The bill is, furthermore, illogical in its thought.

Idiocy will not be prevented by the prevention of procreation among these inmates. This mental condition is due to causes many of which are entirely beyond our knowledge. It existed long before there were ever such inmates of such institutions.

If this plan is to be adopted, to make it effective it should be carried into operation in the world at large, and not in institutions where the inmates are watched by nurses, kept separate, and have all the care which is likely to rendered procreation there very rare, if not altogether impossible.

In one of these institutions, I am reliably informed, there have only been three births in ten years. A great objection is that the bill would encourage experimentation upon living animals, and would be the beginning of experimentation upon living human beings, leading logically to results which can be readily forecasted.

The chief physician, in charge at Elwyn, has candidly told us, in an article recently published upon “Heredity,” that “Studies in heredity tend to emphasize the wisdom of those ancient peoples who taught that the healthful development of the individual and the elimination of the weakling was the truest patriotism — springing from an abiding sense of the fulfillment of a duty to the state.”

To permit such an operation would be to inflict cruelty upon a helpless class in the community which the state has undertaken to protect. However skillfully performed, it would at times lead to peritonitis, blood poisoning, lockjaw and death.


For these reasons the bill is not approved.

SAML. W. PENNYPACKER
Governor of Pennsylvania
1905

Source: Henry H. Laughlin’s ‘Eugenical sterilization in the United States’ (Chicago: Psychopathic Laboratory of the Municipal Court of Chicago, 1922), on page 3

The Changing Public's Perception of Self-Driving Cars: Results are compared to an equivalent survey from 2014 and the public is less positive about self-driving cars today

The Changing Public's Perception of Self-Driving Cars. Ed Richardson, Philip Davies. May 2018, DOI: 10.13140/RG.2.2.34641.02402

Description: Self-driving cars are now being tested on roads in the UK and the public’s perception will become a crucial part of determining the role that self-driving cars have in the future. This paper contains survey results of the public and concludes that most people think self-driving cars will reduce the number of accidents on motorways but only a small percentage of people would be interested in owning one. The results are compared to an equivalent survey from 2014 and the data shows that the public is less positive about self-driving cars today.

Check also The Ugly Truth About Ourselves and Our Robot Creations: The Problem of Bias and Social Inequity. Ayanna Howard and Jason Borenstein. Science and Engineering Ethics, https://www.bipartisanalliance.com/2017/09/the-ugly-truth-about-ourselves-and-our.html

And Psychological roadblocks to the adoption of self-driving vehicles. Azim Shariff, Jean-François Bonnefon & Iyad Rahwan. Nature Human Behaviour (2017), https://www.bipartisanalliance.com/2017/09/psychological-roadblocks-to-adoption-of.html

Bitches, Fishes, and Monsters: Prison Slang and Nonhuman Animal Terminology

Bitches, Fishes, and Monsters: Prison Slang and Nonhuman Animal Terminology. Joshua B. Hill and Julie Banks. Society & Animals, DOI: 10.1163/15685306-12341516

Abstract: The adult prison population in the U.S. is one of the most important, marginalized, yet misunderstood groups within the country. Not only is the population larger than those of other industrialized nations, but the prisons themselves also tend to be more punitive in nature. While there have been many proposed reasons for this, ranging from differences in the “American Character” to the increasing severity of mandatory sentencing guidelines, explanations of the American prisoner setting remain thin. One area that has relevance to this topic but in which there has been little research is the language used to describe prisoners. This language is replete with images of nonhuman animals. Examples and explanations of this phenomenon are provided through the inspection of the lexicons and argots (“prison slang”) for animal themes, and implications regarding implicit power relationships and the effects on both prisoners and nonhuman animals stemming from this language are explored.

Keywords: corrections; lexicography; animals; discourse analysis

Allocating under the influence: Effects of alcohol intoxication and social identification on in-group favoritism

Zhou, J., Heim, D., Monk, R., Levy, A., & Pollard, P. (2018). Allocating under the influence: Effects of alcohol intoxication and social identification on in-group favoritism. Experimental and Clinical Psychopharmacology, 26(3), 268-277. http://dx.doi.org/10.1037/pha0000186

Abstract: The “social lubrication” function of alcohol during interpersonal interactions is well documented. However, less is known about the effects of alcohol consumption on group-level behavior. Empirical findings from social psychological literature suggest that individuals tend to favor those who are considered as members of their own social group. Not yet evaluated is how alcohol intoxication interacts with this group-level bias. Therefore, the current study examined experimentally the effects of intoxication on group bias. Ninety-four individuals (Mage = 20.18, SD = 2.36, 55 women, 39 men) were randomly assigned to consume an alcoholic (n = 48) or a placebo (n = 46) drink before completing manipulated allocation matrices, a task which measured the distribution of hypothetical monetary awards based on social groups. Results point to an interaction between drink condition and social group identification, whereby identification was significantly associated with in-group favoritism among intoxicated individuals only. Following alcohol consumption, participants with higher identification with their social group were more likely to demonstrate allocation strategies that favored their own group members. However, nonsignificant effects were observed for those in the placebo condition. The findings highlight how alcohol intoxication may facilitate group bias that results from social group identification.

Morality can be influenced by motivational states; authors measured moral disapproval under fasting and satiation and found that hunger reduces moral disapproval of ethical violations

The effect of hunger and satiety in the judgment of ethical violations. Carmelo M. Vicario et al. Brain and Cognition, Volume 125, August 2018, Pages 32–36. https://doi.org/10.1016/j.bandc.2018.05.003

Highlights
•    Morality can be influenced by motivational states.
•    Whether appetite can affect morality is unknown.
•    We measured moral disapproval under fasting and satiation.
•    Hunger reduces moral disapproval of ethical violations.

Abstract: Human history is studded with instances where instinctive motivations take precedence over ethical choices. Nevertheless, the evidence of any linking between motivational states and morality has never been systematically explored. Here we addressed this topic by testing a possible linking between appetite and moral judgment. We compared moral disapproval ratings (MDR) for stories of ethical violations in participants under fasting and after having eaten a snack. Our results show that subjective hunger, measured via self-reported rating, reduces MDR for ethical violations. Moreover, the higher the disgust sensitivity the higher the MDR for ethical violations. This study adds new insights to research on physiological processes influencing morality by showing that appetite affects moral disapproval of ethical violations.

Keywords: Fasting; Snack; Appetite; Disgust sensitivity; Moral disapproval; Ethical violation

More evidence that less is better: Sub-optimal choice in dogs

More evidence that less is better: Sub-optimal choice in dogs. Rebecca J. Chase, David N. George. Learning & Behavior, https://link.springer.com/article/10.3758/s13420-018-0326-1

Abstract: The less-is-better effect is a preference for the lesser of two alternatives sometimes observed when they are evaluated separately. For example, a dinner service of 24 intact pieces might be judged to be more valuable than a 40-piece dinner service containing nine broken pieces. Pattison and Zentall (Animal Cognition, 17: 1019-1022, 2014) reported similar sub-optimal choice behavior in dogs using a simultaneous choice procedure. Given a choice between a single high-value food item (cheese) or an equivalent high-value item plus a lower-value food item (carrot), their dogs chose the individual item. In a subsequent test, the dogs preferred two high-value items to a single high-value item, suggesting that avoidance of multiple items did not cause the sub-optimal choice behavior. In two experiments, we replicated Pattison and Zentall’s procedure while including additional controls. In Experiment 1, habituation of neophobia for multiple items was controlled for by intermixing the two types of test trial within a single experimental session. In Experiment 2, we controlled for avoidance of heterogeneous rewards by including test trials in which a choice was offered between the combination of items and a single low-value item. In both experiments we observed sub-optimal choice behavior which could not be explained by either of these putative mechanisms. Our results, as well as those of Pattison and Zentall, are consistent with the suggestion that dogs’ assessment of the total value of multiple items is based, at least partly, on their average quality.

Monday, June 4, 2018

The positivity effect: a negativity bias in youth fades with age; neural degradation and cognitive impairment cannot account for the effect; and cognitive load reduces it

The positivity effect: a negativity bias in youth fades with age. Laura L Carstensen, Marguerite De Liema. Current Opinion in Behavioral Sciences, Volume 19, February 2018, Pages 7-12, https://doi.org/10.1016/j.cobeha.2017.07.009

Highlights
•    Neural degradation and cognitive impairment cannot account for the positivity effect.
•    Cognitive load reduces the positivity effect.
•    Constraints on time horizons produce the positivity effect in young people.
•    Selective attention to positive information may hold both advantageous and detrimental consequences for older adults.

Abstract: Relative to younger adults, older adults attend to and remember positive information more than negative information. This shift from a negativity bias in younger age to a preference for positive information in later life is termed the ‘positivity effect.’ Based on nearly two decades of research and recent evidence from neuroscience, we argue that the effect reflects age-related changes in motivation that direct behavior and cognitive processing rather than neural or cognitive decline. Understanding the positivity effect, including conditions that reduce and enhance it, can inform effective public health and educational messages directed at older people.

Individuals felt on average 15% to 16% younger relative to their chronological age; those feeling older have higher mortality risk

Subjective Age and Mortality in Three Longitudinal Samples. Stephan, Yannick; Sutin, Angelina; Terracciano, Antonio. Psychosomatic Medicine: June 1, 2018 - doi: 10.1097/PSY.0000000000000613

Objective: Subjective age has been implicated in a range of health outcomes. The present study extends existing research by providing new data on the relation between subjective age and mortality in three large national samples.

Methods: Participants (total N > 17,000) were drawn from the Health and Retirement Study (HRS, 2008-2014), the Midlife in the United State Survey (MIDUS, 1995-2014), and the National Health and Aging Trends Study (NHATS, 2011-2014). Subjective age, demographic factors, disease burden, functional limitations, depressive symptoms, and physical inactivity were assessed at baseline and mortality data were tracked for up to 20 years. Cognition was also included as a covariate in the HRS and the NHATS.

Results: Individuals felt on average 15% to 16% younger relative to their chronological age. Feeling approximately 8, 11, and 13 years older in the MIDUS, HRS, and NHATS, was related to an 18%, 29% and 25% higher risk of mortality, respectively. This pattern was confirmed by a meta-analysis of the three samples (HR = 1.24; 95%CI = 1.17-1.31, p<.001). Multivariate analyses showed that disease burden, physical inactivity, functional limitations, and cognitive problems, but not depressive symptoms, accounted for the associations between subjective age and mortality.

Conclusions: The present study provides robust evidence for an association between an older subjective age and a higher risk of mortality across adulthood. These findings support the role of subjective age as a biopsychosocial marker of aging.

Consumption, contact and copulation: how pathogens have shaped human psychological adaptations

Consumption, contact and copulation: how pathogens have shaped human psychological adaptations. Debra Lieberman, Joseph Billingsley, Carlton Patrick. Philosophical Transactions of the Royal Society B: Biological Sciences, July 19 2018, Volume 373, issue 1751. DOI: 10.1098/rstb.2017.0203

Abstract: Disgust is an emotion intimately linked to pathogen avoidance. Building on prior work, we suggest disgust is an output of programmes that evolved to address three separate adaptive problems: what to eat, what to touch and with whom to have sex. We briefly discuss the architecture of these programmes, specifying their perceptual inputs and the contextual factors that enable them to generate adaptive and flexible behaviour. We propose that our sense of disgust is the result of these programmes and occurs when information-processing circuitries assess low expected values of consumption, low expected values of contact or low expected sexual values. This conception of disgust differs from prior models in that it dissects pathogen-related selection pressures into adaptive problems related to consumption and contact rather than assuming just one pathogen disgust system, and it excludes moral disgust from the domain of disgust proper. Instead, we illustrate how low expected values of consumption and contact as well as low expected sexual values can be used by our moral psychology to provide multiple causal links between disgust and morality.

Check also Why do people vary in disgust? Joshua M. Tybur, Çağla Çınar, Annika K. Karinen, Paola Perone. Philosophical Transactions of the Royal Society B: Biological Sciences, July 19 2018. Volume 373, issue 1751, https://www.bipartisanalliance.com/2018/06/explanations-for-variability.html

Also Magical Contagion Effects in Consumer Contexts: It may be both negative (fly in your plate) or positive (a celebrity's dress)
Catching (Up with) Magical Contagion: A Review of Contagion Effects in Consumer Contexts. Julie Y. Huang, Joshua M. Ackerman and George E. Newman. Journal of the Association for Consumer Research, 2017, vol. 2, issue 4, 430 - 443.  https://www.bipartisanalliance.com/2018/04/magical-contagion-effects-in-consumer.html
Kollareth, D., & Russell, J. A. (2018). Even unpleasant reminders that you are an animal need not disgust you. Emotion, 18(2), 304-312. https://www.bipartisanalliance.com/2018/03/we-tested-hypothesis-that-we-humans.html

The Effect of Germ Movement on the Construal of Mental States in Germs: The Moderating Role of Contamination Fear. John H. Riskind, Dylan K. Richards. Cognitive Therapy and Research, February 2018, Volume 42, Issue 1, pp 36–47. https://www.bipartisanalliance.com/2018/01/the-effect-of-germ-movement-on.html