New framework for the psychological origins of human cooperation that harnesses evolutionary theories about the two major problems posed by cooperation: generating and distributing benefits

How Children Solve the Two Challenges of Cooperation. Felix Warneken. Annual Review of Psychology, Vol. 69:205-229 (January 2018), https://doi.org/10.1146/annurev-psych-122216-011813

Abstract: In this review, I propose a new framework for the psychological origins of human cooperation that harnesses evolutionary theories about the two major problems posed by cooperation: generating and distributing benefits. Children develop skills foundational for identifying and creating opportunities for cooperation with others early: Infants and toddlers already possess basic skills to help others and share resources. Yet mechanisms that solve the free-rider problem—critical for sustaining cooperation as a viable strategy—emerge later in development and are more sensitive to the influence of social norms. I review empirical studies with children showing a dissociation in the origins of and developmental change seen in these two sets of processes. In addition, comparative studies of nonhuman apes also highlight important differences between these skills: The ability to generate benefits has evolutionary roots that are shared between humans and nonhuman apes, whereas there is little evidence that other apes exhibit comparable capacities for distributing benefits. I conclude by proposing ways in which this framework can motivate new developmental, comparative, and cross-cultural research about human cooperation.

No evidence that more physically attractive women have higher estradiol or progesterone

No evidence that more physically attractive women have higher estradiol or progesterone. Benedict C. Jones et al. bioRxiv, doi https://doi.org/10.1101/136515

Abstract: Putative associations between sex hormones and attractive physical characteristics in women are central to many theories of human physical attractiveness and mate choice. Although such theories have become very influential, evidence that physically attractive and unattractive women have different hormonal profiles is equivocal. Consequently, we investigated hypothesized relationships between salivary estradiol and progesterone and two aspects of women's physical attractiveness that are commonly assumed to be correlated with levels of these hormones: facial attractiveness (N=249) and waist-to-hip ratio (N=247). Our analyses revealed no evidence that women with more attractive faces or lower (i.e., more attractive) waist-to-hip ratios had higher levels of estradiol or progesterone. These results do not support the influential hypothesis that between-woman differences in physical attractiveness are related to estradiol and/or progesterone.

We find that virtually all core assumptions and hypothesized mechanisms of posttraumatic stress disorder lack compelling or consistent empirical support

Posttraumatic stress disorder: An empirical evaluation of core assumptions. Gerald M.Rosen, Scott O. Lilienfeld. Clinical Psychology Review, Volume 28, Issue 5, June 2008, Pages 837-868, https://doi.org/10.1016/j.cpr.2007.12.002

Abstract: The diagnosis of posttraumatic stress disorder (PTSD) rests on several core assumptions, particularly the premise that a distinct class of traumatic events is linked to a distinct clinical syndrome. This core assumption of specific etiology ostensibly distinguishes the PTSD diagnosis from virtually all other psychiatric disorders. Additional attempts to distinguish PTSD from extant conditions have included searches for distinctive markers (e.g., biological and laboratory findings) and hypothesized underlying mechanisms (e.g., fragmentation of traumatic memory). We review the literature on PTSD's core assumptions and various attempts to validate the construct within a nomological network of distinctive correlates. We find that virtually all core assumptions and hypothesized mechanisms lack compelling or consistent empirical support. We consider the implications of these findings for conceptualizing PTSD in the forthcoming edition of the American Psychiatric Association's diagnostic manual.

Keywords: Posttraumatic stress disorder (PTSD); Validity; Construct validity; Discriminant validity; Traumatic events;Criterion A; Symptom criteria

Whereas humans already prefer helpers by 3 months of age, bonobos favor hinderers, maybe from attraction to dominant individuals

Bonobos Prefer Individuals that Hinder Others over Those that Help. Christopher Krupenye, Brian Hare. Current Biology, https://doi.org/10.1016/j.cub.2017.11.061

Highlights
•    Bonobos discriminate between agents that either help or hinder others
•    Whereas humans already prefer helpers by 3 months of age, bonobos favor hinderers
•    Bonobos’ preference may stem from attraction to dominant individuals
•    This form of prosocial preference may be derived in humans

Summary: Humans closely monitor others’ cooperative relationships [1 ;  2]. Children and adults willingly incur costs to reward helpers and punish non-helpers—even as bystanders [3; 4 ;  5]. Already by 3 months, infants favor individuals that they observe helping others [6; 7 ;  8]. This early-emerging prosocial preference may be a derived motivation that accounts for many human forms of cooperation that occur beyond dyadic interactions and are not exhibited by other animals [9 ;  10]. As the most socially tolerant nonhuman ape [11; 12; 13; 14; 15; 16 ;  17] (but see [18]), bonobos (Pan paniscus) provide a powerful phylogenetic test of whether this trait is derived in humans. Bonobos are more tolerant than chimpanzees, can flexibly obtain food through cooperation, and voluntarily share food in captivity and the wild, even with strangers [ 11; 12; 13; 14; 15; 16 ;  17] (but see [18]). Their neural architecture exhibits a suite of characteristics associated with greater sensitivity to others [ 19 ;  20], and their sociality is hypothesized to have evolved due to selection against male aggression [ 21; 22 ;  23]. Here we show in four experiments that bonobos discriminated agents based on third-party interactions. However, they did not exhibit the human preference for helpers. Instead, they reliably favored a hinderer that obstructed another agent’s goal (experiments 1–3). In a final study (experiment 4), bonobos also chose a dominant individual over a subordinate. Bonobos’ interest in hinderers may reflect attraction to dominant individuals [24]. A preference for helpers over hinderers may therefore be derived in humans, supporting the hypothesis that prosocial preferences played a central role in the evolution of human development and cooperation.

Keywords: prosocial preference; prosocial motivation; social evaluation; third-party knowledge; cooperation; human evolution; human development; bonobo; great ape; reputation attribution

Historians and students asked to check on-line information often fell victim to easily manipulated features of websites, such as official-looking logos and domain names

Wineburg S., Breakstone J., McGrew S., Ortega T. (2018) Why Google Can’t Save Us. In: Zlatkin-Troitschanskaia O., Wittum G., Dengel A. (eds) Positive Learning in the Age of Information, pp 221-228, https://doi.org/10.1007/978-3-658-19567-0_13

Abstract: The Stanford History Education Group has prototyped, field tested, and validated a bank of assessments that tap civic online reasoning—the ability to judge the credibility of the information that floods young people’s smartphones, tablets, and computers. We developed 56 tasks and administered them to students across 12 states. In total, we collected and analyzed 7,804 student responses. From pre-teens to seniors in college, students struggled mightily to evaluate online information. To investigate how people determine the credibility of digital information, we sampled 45 individuals: 10 PhD historians, 10 professional fact checkers, and 25 Stanford University undergraduates. We observed them as they evaluated websites and engaged in open web searches on social and political issues. Historians and students often fell victim to easily manipulated features of websites, such as official-looking logos and domain names.

In 1994, 16 pct of Democrats had a “very unfavorable” view of the GOP, now are 38 pct. Then, 17 pct of Republicans had a “very unfavorable” view of Democrats, now it is 43 pct. Mutual opinion: closed-minded, dishonest, immoral, lazy, unintelligent

The Retreat to Tribalism. David Brooks
The New York Times, Jan 1, 2018
https://www.nytimes.com/2018/01/01/opinion/the-retreat-to-tribalism.html

photo removed

[...]

[...] N.Y.U.’s Jonathan Haidt [listed] in a lecture delivered to the Manhattan Institute in November [...] some of the reasons centrifugal forces may now exceed centripetal: the loss of the common enemies we had in World War II and the Cold War, an increasingly fragmented media, the radicalization of the Republican Party, and a new form of identity politics, especially on campus.

Haidt made the interesting point that identity politics per se is not the problem. Identity politics is just political mobilization around group characteristics. The problem is that identity politics has dropped its centripetal elements and become entirely centrifugal.

[...]

From an identity politics that emphasized our common humanity, we’ve gone to an identity politics that emphasizes having a common enemy. On campus these days, current events are often depicted as pure power struggles — oppressors acting to preserve their privilege over the virtuous oppressed.

“A funny thing happens,” Haidt said, “when you take young human beings, whose minds evolved for tribal warfare and us/them thinking, and you fill those minds full of binary dimensions. You tell them that one side in each binary is good and the other is bad. You turn on their ancient tribal circuits, preparing them for battle. Many students find it thrilling; it floods them with a sense of meaning and purpose.”

The problem is that tribal common-enemy thinking tears a diverse nation apart.

[...]

In 1994, only 16 percent of Democrats had a “very unfavorable” view of the G.O.P. Now, 38 percent do. Then, only 17 percent of Republicans had a “very unfavorable” view of Democrats. Now, 43 percent do. When the Pew Research Center asked Democrats and Republicans to talk about each other, they tended to use the same words: closed-minded, dishonest, immoral, lazy, unintelligent.

[...]

Over the past two generations, however, excessive individualism and bad schooling have corroded both of those sources of cohesion.

In 1995, the French intellectual Pascal Bruckner published “The Temptation of Innocence,” in which he argued that excessive individualism paradoxically leads to in-group/out-group tribalism. Modern individualism releases each person from social obligation, but “being guided only by the lantern of his own understanding, the individual loses all assurance of a place, an order, a definition. He may have gained freedom, but he has lost security.”

In societies like ours, individuals are responsible for their own identity, happiness and success. “Everyone must sell himself as a person in order to be accepted,” Bruckner wrote. We all are constantly comparing ourselves to others and, of course, coming up short. The biggest anxiety is moral. We each have to write our own gospel that defines our own virtue.

The easiest way to do that is to tell a tribal oppressor/oppressed story and build your own innocence on your status as victim. Just about everybody can find a personal victim story. Once you’ve identified your herd’s oppressor — the neoliberal order, the media elite, white males, whatever — your goodness is secure. You have virtue without obligation. Nothing is your fault.

“What is moral order today? Not so much the reign of right-thinking people as that of right-suffering, the cult of everyday despair,” Bruckner continued. “I suffer, therefore I am worthy. … Suffering is analogous to baptism, a dubbing that inducts us into the order of a higher humanity, hoisting us above our peers.”

[...]

A version of this op-ed appears in print on January 2, 2018, on Page A15 of the New York edition with the headline: The Retreat To Tribalism.

Lower resting heart rate predicts the ability to detect deception: The rate indicates the level of autonomous arousal, the level of arousal influences information processing

Resting heart rate: A physiological predicator of lie detection ability. Geoffrey Duran, Isabelle Tapiero, George A. Michael. Physiology & Behavior, https://doi.org/10.1016/j.physbeh.2018.01.002

Highlights
•    An investigation of the ability to detect deception is proposed.
•    Resting heart rate predicts the ability to detect deception.
•    Resting heart rate indicates the level of autonomous arousal.
•    The level of arousal influences information processing.
•    Resting heart rate helps to distinguish between poor and good deception detectors.

Abstract: This study explored a psychophysiological measure, Resting Heart Rate (RHR), as a predicator of the ability to detect lies. RHR was recorded for 1 min and followed by a deception detection task in which participants were required to judge 24 videos of people describing a real-life event (50% truthful, 50% deceptive). Multiple regression analyses showed that, among other individual characteristics, only RHR predicted the ability to distinguish truth from lies. Importantly, the prediction was negative. This result suggests that the higher the RHR, the worse the detection of lies. Since the RHR is considered to be a physiological trait indexing autonomous arousal, and since high-arousal states can lead to restricted attentional resources, we suggest that limited selection and utilization of cues due to restricted attention is the reason why higher RHR leads to poor deception detection.

Keywords: Detection of deception; Resting heart rate; Arousal; Cue utilization theory

Drawing on an analysis of 1.2 million vehicle movements, we show that reduced road/street illuminance levels are associated with increased car speeding

Blind haste: As light decreases, speeding increases. Emanuel de Bellis et al. PLOS One, https://doi.org/10.1371/journal.pone.0188951

Abstract: Worldwide, more than one million people die on the roads each year. A third of these fatal accidents are attributed to speeding, with properties of the individual driver and the environment regarded as key contributing factors. We examine real-world speeding behavior and its interaction with illuminance, an environmental property defined as the luminous flux incident on a surface. Drawing on an analysis of 1.2 million vehicle movements, we show that reduced illuminance levels are associated with increased speeding. This relationship persists when we control for factors known to influence speeding (e.g., fluctuations in traffic volume) and consider proxies of illuminance (e.g., sight distance). Our findings add to a long-standing debate about how the quality of visual conditions affects drivers’ speed perception and driving speed. Policy makers can intervene by educating drivers about the inverse illuminance‒speeding relationship and by testing how improved vehicle headlights and smart road lighting can attenuate speeding.

The five-dimensional curiosity scale: Capturing the bandwidth of curiosity and identifying four unique subgroups of curious people

Kashdan, T.B., Stiksma, M.C.,Disabato, D., McKnight, P.E., Bekier, J., Kaji, J., & Lazarus, R. (in press). The five-dimensional curiosity scale: Capturing the bandwidth of curiosity and identifying four unique subgroups of curious people. Journal of Research in Personality, https://www.researchgate.net/publication/321471978_The_Five-Dimensional_Curiosity_Scale_Capturing_the_bandwidth_of_curiosity_and_identifying_four_unique_subgroups_of_curious_people

Abstract: Since the origins of psychology, curiosity has occupied a pivotal position in the study of motivation, emotion, and cognition; and disciplines as far-ranging as biology, economics, robotics, and leadership. Theorists have disagreed about the basic tenets of curiosity; some researchers contend that the rewards arise when resolving ambiguity and uncertainty whereas others argue that being curious is an intrinsically pleasurable experience. Three studies were conducted to consolidate competing theories and isolated bodies of research. Using data from a community survey of 508 adults (Study 1), 403 adults on MTurk (Study 2), and a nationally representative household survey of 3,000 adults (Study 3), we found evidence for five distinct factors: Joyous Exploration, Deprivation Sensitivity, Stress Tolerance, Social Curiosity, and Thrill Seeking - forming The Five-Dimensional Curiosity Scale (5DC). Each factor had substantive relations with a battery of personality, emotion, and well-being measures. Taking advantage of this multidimensional model, we found evidence for four distinct types of curious people in Study 3 referred to as The Fascinated (28% of sample), Problem Solvers (28%), Empathizers (25%), and Avoiders (19%). Subgroups differed in their passionate interests, areas of expertise, consumer behavior, and social media use; challenging an assumption that there is a homogenous population to be discriminated on a single dimension from incurious to very curious. With greater bandwidth and predictive power, the 5DC offers new opportunities for research on origins, consequences, life outcomes, and intervention strategies to enhance curiosity.

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What Are the Five Dimensions of Curiosity? Todd B. Kashdan
A comprehensive new model to understand and measure curiosity.
Jan 02, 2018
https://www.psychologytoday.com/blog/curious/201801/what-are-the-five-dimensions-curiosity

Extracts:

Upon collecting data from a nationally representative sample of 508 adults, and then 403 adults online, and then another nationally representative sample of 3,000 adults, we uncovered 5 dimensions of curiosity:

1. Joyous Exploration - this is the prototype of curiosity – the recognition and desire to seek out new knowledge and information, and the subsequent joy of learning and growing.

2. Deprivation Sensitivity - this dimension has a distinct emotional tone, with anxiety and tension being more prominent than joy – pondering abstract or complex ideas, trying to solve problems, and seeking to reduce gaps in knowledge.

3. Stress Tolerance - this dimension is about the willingness to embrace the doubt, confusion, anxiety, and other forms of distress that arise from exploring new, unexpected, complex, mysterious, or obscure events.

4. Social Curiosity - wanting to know what other people are thinking and doing by observing, talking, or listening in to conversations.

5. Thrill Seeking - the willingness to take physical, social, and financial risks to acquire varied, complex, and intense experiences.

[...]

And upon treating these dimensions as part of a single profile, we found evidence for 4 types of curious people:

1. The Fascinated - high on all dimensions of curiosity, particularly Joyous Exploration

2. Problem Solvers - high on Deprivation Sensitivity, medium on other dimensions

3. Empathizers - high on Social Curiosity, medium on other dimensions

4. Avoiders - low on all dimensions, particularly Stress Tolerance

Identification of acutely sick people and facial cues of sickness

Identification of acutely sick people and facial cues of sickness. John Axelsson, Tina Sundelin, Mats J. Olsson, Kimmo Sorjonen, Charlotte Axelsson, Julie Lasselin, Mats Lekander. Proceedings of the Royal Society B, DOI: 10.1098/rspb.2017.2430

Abstract: Detection and avoidance of sick individuals have been proposed as essential components in a behavioural defence against disease, limiting the risk of contamination. However, almost no knowledge exists on whether humans can detect sick individuals, and if so by what cues. Here, we demonstrate that untrained people can identify sick individuals above chance level by looking at facial photos taken 2 h after injection with a bacterial stimulus inducing an immune response (2.0 ng kg−1 lipopolysaccharide) or placebo, the global sensitivity index being d′ = 0.405. Signal detection analysis (receiver operating characteristic curve area) showed an area of 0.62 (95% confidence intervals 0.60–0.63). Acutely sick people were rated by naive observers as having paler lips and skin, a more swollen face, droopier corners of the mouth, more hanging eyelids, redder eyes, and less glossy and patchy skin, as well as appearing more tired. Our findings suggest that facial cues associated with the skin, mouth and eyes can aid in the detection of acutely sick and potentially contagious people.

Openness to experience, rather than intellectual curiosity, is the investment personality trait that broadly benefits learning and adult intelligence

Better Open Than Intellectual: The Benefits of Investment Personality Traits for Learning. Sophie von Stumm. Personality and Social Psychology Bulletin,  https://doi.org/10.1177/0146167217744526

Abstract: The investment theory of adult intelligence posits that individual differences in knowledge attainment result from people’s differences in cognitive ability and their propensity to apply and invest that ability, which is referred to as investment personality traits. Here, we differentiated intellectual (i.e., intellectual curiosity) and nonintellectual investment (i.e., openness to experience), and we tested their respective predictive validity for knowledge attainment in four independent lab-based studies (overall N = 649). Openness to experience was positively associated with knowledge attainment across all four studies, and this effect was by and large independent of cognitive ability. By contrast, intellectual curiosity was not related to knowledge attainment. The findings suggest that openness to experience, rather than intellectual curiosity, is the investment personality trait that broadly benefits learning and adult intelligence.

Keywords: investment personality traits, openness, intellectual curiosity, intelligence, learning

People are often uncomfortable dealing with financial decisions 'cause they perceive financial decisions – more so than decisions in many other equally complex and important domains – as compatible with a cold, analytical mode of thinking and as incompatible with feelings and emotions

Park, Jane Jeongin and Sela, Aner, Not My Type: Why Affective Decision-Makers Are Reluctant to Make Financial Decisions (May 10, 2017). Journal of Consumer Research, 2018. Available at SSRN: https://ssrn.com/abstract=2966299 or http://dx.doi.org/10.2139/ssrn.2966299

Abstract: Why are people often uncomfortable dealing with financial decisions? We propose that people perceive financial decisions – more so than decisions in many other equally complex and important domains – as compatible with a cold, analytical mode of thinking and as incompatible with feelings and emotions. Consequently, the more people perceive themselves as inclined to rely on affect in their decisions, the more they experience self-concept incongruity with financial decisions (i.e., feeling that financial decisions are “not them”), and consequently show an increased tendency to avoid such decisions. Five studies demonstrate this phenomenon using both consequential and hypothetical decisions, provide evidence for the proposed mechanism, and rule out alternative accounts, including perceived financial knowledge, expertise and self-efficacy perceptions, decision confidence, and preference for numerical information. The findings contribute to research on thinking styles and decision avoidance, and they underscore a characteristic of financial decisions that makes them stand out among many other decision types. In addition to their theoretical significance, the findings have practical implications for the communication of financial products and services.

Keywords: Financial decisions, thinking styles, decision avoidance, analytical thinking, emotions

Sexual identity, attraction and behaviour in Britain: The implications of using different dimensions of sexual orientation to estimate the size of sexual minority populations

Sexual identity, attraction and behaviour in Britain: The implications of using different dimensions of sexual orientation to estimate the size of sexual minority populations and inform public health interventions. Rebecca S. Geary et al. PLoS One, 10.1371/journal.pone.0189607

Abstract

Background: Sexual orientation encompasses three dimensions: sexual identity, attraction and behaviour. There is increasing demand for data on sexual orientation to meet equality legislation, monitor potential inequalities and address public health needs. We present estimates of all three dimensions and their overlap in British men and women, and consider the implications for health services, research and the development and evaluation of public health interventions.

Methods: Analyses of data from Britain’s third National Survey of Sexual Attitudes and Lifestyles, a probability sample survey (15,162 people aged 16–74 years) undertaken in 2010–2012.

Findings: A lesbian, gay or bisexual (LGB) identity was reported by 2·5% of men and 2·4% of women, whilst 6·5% of men and 11·5% of women reported any same-sex attraction and 5·5% of men and 6·1% of women reported ever experience of same-sex sex. This equates to approximately 547,000 men and 546,000 women aged 16–74 in Britain self-identifying as LGB and 1,204,000 men and 1,389,000 women ever having experience of same-sex sex. Of those reporting same-sex sex in the past 5 years, 28% of men and 45% of women identified as heterosexual.

Interpretation: There is large variation in the size of sexual minority populations depending on the dimension applied, with implications for the design of epidemiological studies, targeting and monitoring of public health interventions and estimating population-based denominators. There is also substantial diversity on an individual level between identity, behaviour and attraction, adding to the complexity of delivering appropriate services and interventions.

The formation of creative clusters is not preceded by increases in city size. Instead, the emergence of city institutions protecting economic and political freedoms facilitates the attraction and production of creative talent

Serafinelli, Michel and Tabellini, Guido, Creativity Over Time and Space (October 2017). CEPR Discussion Paper No. DP12365. Available at SSRN: https://ssrn.com/abstract=3053893

Abstract: Creativity is often highly concentrated in time and space, and across different domains. What explains the formation and decay of clusters of creativity? In this paper we match data on thousands of notable individuals born in Europe between the XIth and the XIXth century with historical data on city institutions and population. After documenting several stylized facts, we show that the formation of creative clusters is not preceded by increases in city size. Instead, the emergence of city institutions protecting economic and political freedoms facilitates the attraction and production of creative talent.

Keywords: agglomeration, Gravity, Immigration, Innovation, Political Institutions

Perfectionism Is Increasing Over Time: A Meta-Analysis of Birth Cohort Differences From 1989 to 2016

Curran, T., & Hill, A. P. (2017, December 28). Perfectionism Is Increasing Over Time: A Meta-Analysis of Birth Cohort Differences From 1989 to 2016. Psychological Bulletin, http://dx.doi.org/10.1037/bul000013

From the 1980s onward, neoliberal governance in the United States, Canada, and the United Kingdom has emphasized competitive individualism and people have seemingly responded, in kind, by agitating to perfect themselves and their lifestyles. In this study, the authors examine whether cultural changes have coincided with an increase in multidimensional perfectionism in college students over the last 27 years. Their analyses are based on 164 samples and 41,641 American, Canadian, and British college students, who completed the Multidimensional Perfectionism Scale (Hewitt & Flett, 1991) between 1989 and 2016 (70.92% female, median age = 20.66). Cross-temporal meta-analysis revealed that levels of self-oriented perfectionism, socially prescribed perfectionism, and other-oriented perfectionism have linearly increased. These trends remained when controlling for gender and between-country differences in perfectionism scores. Overall, in order of magnitude of the observed increase, the findings indicate that recent generations of young people perceive that others are more demanding of them, are more demanding of others, and are more demanding of themselves.

Keywords: personality, culture, neoliberalism, psychopathology