Media use & gender relationship to nightmares

Gackenbach, J., Yu, Y., & Lee, M.-N. (2018). Media use and gender relationship to the nightmare protection hypothesis: A cross-cultural analysis. Dreaming, 28(2), 169-192. http://dx.doi.org/10.1037/drm0000066

Abstract: Chinese and Canadian people answered surveys in their native languages about their self-construal, media use history, and dreaming experiences. This included reporting a recent dream. The nightmare protection thesis was investigated. Sex was found to be modulated by culture in terms of the relationship between types of media used and negative dream content. This was particularly evident for men in Greater China versus Canada along the self-construal dimension of interdependence. As both cultures reported no difference in independent self-construal, it was argued that it is the role of interdependence that accounts for male differences between cultures. In addition, each media type highlighted a different cultural value. Specifically, gaming seemed more consistent with independence, whereas social media was consistent with interdependence. When dreams were considered, source data were important. Specifically, when respondents answered in terms of their impressions of their dream history, high social media users reported more bad dreams across sex and country. However, for the video game groups, a 3-way interaction emerged where country, sex, and gaming evidenced different patterns of bad dream scores. The other self-report dream measure was emotions felt during a recent dream, with general negative and positive emotions showing group differences. Finally, the judges’ coding of negative elements of dreams, threat and aggression, was most sensitive to social media effects. Across all the threat simulation interactions where country was an independent variable, the male sex in each country was most likely to show opposite results from the female sex.

Gender Equality and the Gender Gap in Mathematics: Improvement in gender equality does not reduce the gender gap

Gender Equality and the Gender Gap in Mathematics. Hung-Lin Tao & Christos Michalopoulos. Journal of Biosocial Science, Volume 50, Issue 2, March 2018 , pp. 227-243. https://doi.org/10.1017/S0021932017000141

Summary: A gender gap has been found in mathematics (boys outperform girls) that has prevailed across countries for many decades. Whether this gap results from nature or nurture has been hotly debated. Using the evidence of PISA 2003 and the gender equality index of 2003, some researchers have argued that an improvement in gender equality reduces the gender gap in mathematics. This study used five waves of country-level PISA data and, controlling for country fixed effects, found no evidence to support this argument. Furthermore, individual data for PISA 2012 and the multilevel data model were used. The conclusion drawn also does not support the argument. In fact, the relationship between gender equality and the gender gap in mathematics vanished after PISA 2003.

h/t: Rolf Degen https://twitter.com/DegenRolf

Monozygotic twin differences in school performance are stable and systematic: Non‐shared environmental factors affect school performance in systematic ways that have long‐term & generalist influence

Monozygotic twin differences in school performance are stable and systematic. Sophie von Stumm, Robert Plomin. Developmental Science, https://doi.org/10.1111/desc.12694

Abstract: School performance is one of the most stable and heritable psychological characteristics. Notwithstanding, monozygotic twins (MZ), who have identical genotypes, differ in school performance. These MZ differences result from non‐shared environments that do not contribute to the similarity within twin pairs. Because to date few non‐shared environmental factors have been reliably associated with MZ differences in school performance, they are thought to be idiosyncratic and due to chance, suggesting that the effect of non‐shared environments on MZ differences are age‐ and trait‐specific. In a sample of 2768 MZ twin pairs, we found first that MZ differences in school performance were moderately stable from age 12 through 16, with differences at the ages 12 and 14 accounting for 20% of the variance in MZ differences at age 16. Second, MZ differences in school performance correlated positively with MZ differences across 16 learning‐related variables, including measures of intelligence, personality and school attitudes, with the twin who scored higher on one also scoring higher on the other measures. Finally, MZ differences in the 16 learning‐related variables accounted for 22% of the variance in MZ differences in school performance at age 16. These findings suggest that, unlike for other psychological domains, non‐shared environmental factors affect school performance in systematic ways that have long‐term and generalist influence. Our findings should motivate the search for non‐shared environmental factors responsible for the stable and systematic effects on children’s differences in school performance.

h/t: Rolf Degen https://twitter.com/DegenRolf

Is the Illusory Truth Effect Robust to Individual Differences in Cognitive Ability, Need for Cognitive Closure, and Cognitive Style? Intelligence (cognitive ability) doesn't help to combat the effect of repetition

De keersmaecker, Jonas and Roets, Arne and Pennycook, Gordon and Rand, David G., Is the Illusory Truth Effect Robust to Individual Differences in Cognitive Ability, Need for Cognitive Closure, and Cognitive Style? (April 17, 2018). http://dx.doi.org/10.2139/ssrn.3164151

Abstract: People are more inclined to believe that information is true if they have encountered it before. Although this illusory truth effect is firmly established, little is known about whether it is influenced by inter-individual differences in high-level cognition. Here we focus on three factors that have been shown to play a critical role in a wide variety of epistemic processes: cognitive ability, need for cognitive closure, and cognitive styles. In a first lab study (N = 207), there was no evidence for the moderating role of cognitive ability, need for cognitive closure, or preference for analytic thinking, but individual differences in experiential thinking increased the illusory truth effect. A second, preregistered study (N = 336), however, did not replicate the moderating role of experiential thinking, and also found no evidence for moderation by preference for analytic thinking and cognitive reflection. Finally, in a third study (N = 940), the illusory truth effect was examined using a highly involving set of stimuli, i.e. politically charged news headlines. Again, individual differences in cognitive reflection did not moderate the effect. These results demonstrate that the illusory truth effect is robust to individual differences in cognitive ability, need for cognitive closure and cognitive style.

Keywords: Illusory Truth Effect; Cognitive Style; Cognitive Ability; Need for Cognitive Closure; Decision Making

Susceptibility to partisan fake news is better explained by lack of reasoning (lazyness in thinking) than by motivated reasoning (partisanship)

Lazy, not biased: Susceptibility to partisan fake news is better explained by lack of reasoning than by motivated reasoning. Gordon Pennycook, David G. Rand. Cognition, https://doi.org/10.1016/j.cognition.2018.06.011

Highlights
•    Participants rated perceived accuracy of fake and real news headlines.
•    Analytic thinking was associated with ability to discern between fake and real.
•    We found no evidence that analytic thinking exacerbates motivated reasoning.
•    Falling for fake news is more a result of a lack of thinking than partisanship.

Abstract: Why do people believe blatantly inaccurate news headlines (“fake news”)? Do we use our reasoning abilities to convince ourselves that statements that align with our ideology are true, or does reasoning allow us to effectively differentiate fake from real regardless of political ideology? Here we test these competing accounts in two studies (total N = 3446 Mechanical Turk workers) by using the Cognitive Reflection Test (CRT) as a measure of the propensity to engage in analytical reasoning. We find that CRT performance is negatively correlated with the perceived accuracy of fake news, and positively correlated with the ability to discern fake news from real news – even for headlines that align with individuals’ political ideology. Moreover, overall discernment was actually better for ideologically aligned headlines than for misaligned headlines. Finally, a headline-level analysis finds that CRT is negatively correlated with perceived accuracy of relatively implausible (primarily fake) headlines, and positively correlated with perceived accuracy of relatively plausible (primarily real) headlines. In contrast, the correlation between CRT and perceived accuracy is unrelated to how closely the headline aligns with the participant’s ideology. Thus, we conclude that analytic thinking is used to assess the plausibility of headlines, regardless of whether the stories are consistent or inconsistent with one’s political ideology. Our findings therefore suggest that susceptibility to fake news is driven more by lazy thinking than it is by partisan bias per se – a finding that opens potential avenues for fighting fake news.

Keywords: Fake news; News media; Social media; Analytic thinking; Cognitive reflection test; Intuition; Dual process theory

Who’s Getting the Best Sex? A Comparison by Sexual Orientation

Who’s Getting the Best Sex? A Comparison by Sexual Orientation. Lacey J. Ritter, Hannah R. Morris, David Knox. Sexuality & Culture, https://link.springer.com/article/10.1007/s12119-018-9538-y

Abstract: This study examined the difference in sexual satisfaction between sexual minority and heterosexual college students testing the mediation effects of institutional affiliations and interpersonal relationships. A convenience sample of 280 college sociology students completed a 47-item Internet questionnaire, including self-reports on sexual satisfaction and sexual behaviors/activities. Data on 193 heterosexuals and 87 sexual minority respondents were analyzed using regression to test for differences in reported levels of sexual satisfaction by sexual orientation. Results revealed that sexual minority undergraduates reported lower sexual satisfaction than heterosexual undergraduates. This difference persisted when controlling for sex, race, education, and SES. Mediation analyses found support for the hypothesis that institutional affiliations and interpersonal relationships have an effect on this association. Previous researchers have suggested that sexual minority relationships exist in a context of heterosexism, suppression, stigmatization, prejudice, discrimination and violence which results in lower relationship quality. Such an impact on minority couples’ satisfaction may spill over into lower sexual satisfaction.

Undressed for Success? The Effects of Half-Naked Women on Economic Behavior

Bonnier, Evelina and Dreber, Anna and Hederos Eriksson, Karin and Sandberg, Anna, Undressed for Success? The Effects of Half-Naked Women on Economic Behavior (May 15, 2018). http://dx.doi.org/10.2139/ssrn.3168626

Abstract: Images of half-naked women are in many societies ubiquitous in advertising and popular culture. Yet relatively little is known about the potential impacts of such images on economic decision making. In this paper, we examine how exposure to images of half-naked women affect risk taking, willingness to compete and math performance. We perform a lab experiment with a total of 648 participants of both genders, randomly exposing participants to advertising images including either women in bikini or underwear, fully dressed women, or no women. Exposure to images of half-naked women could potentially have effects on economic preferences and performance through channels such as arousal, cognitive load and stereotyping. Following a pre-registered pre-analysis plan, we find no treatment effects on any of the outcome measures for female participants. For male participants, we also find no effect on willingness to compete or math performance, but our results indicate that men take more risk after having been exposed to images of half-naked women compared to images including no women. We thus do not find any strong support for the hypothesis that exposure to images of half-naked women impact economic preferences, but given the indications of an effect on men's risk taking future studies should explore this further.

Keywords: economic decision making, risk preferences, willingness to compete, altruism, experiment
JEL Classification: D03, C91

Again, those in the lower economic level ask less for redistribution

Fatke, Matthias, Inequality and Political Behavior: Objective Levels Versus Subjective Perceptions (March 8, 2018).  http://dx.doi.org/10.2139/ssrn.3136254

Abstract: Inequality poses one of the biggest challenges of our time. Evidently, it is not self-correcting in the sense that citizens demand more redistributive measures in light of rising inequality. Recent studies suggest this might be due to the fact that citizens’ perceptions of inequality diverge from objective levels. Moreover, it is not the latter, but the former, which are related to preferences conducive to redistribution. Yet, the nascent literature on inequality perceptions exhibits at least two lacunae. First, studies so far have not accounted for the role of subjective position in society. And second, studies on political participation and attitudes still rely by and large on objective levels of inequality. Against this backdrop, our paper advances two arguments: the relationship between inequality perceptions and preferences towards redistribution is conditional on the subjective position of respondents; and political participation and attitudes are rather related to subjective perceptions of inequality instead of objective levels. To that end, we analyze comprehensive survey data on inequality perceptions from the social inequality module of the International Social Survey Programme (1992, 1999, and 2009). Since no comparative data with indicators for both inequality perceptions and political behavior is available, we join additionally a wave of the 2004 ISSP and apply multiple imputation. This allows, for the first time, testing subjective perceptions of inequality as predictor of political behavior. Gaining a better understanding of inequality perceptions contributes to comprehending the absence self-correcting inequality.

Keywords: Inequality, Political Behavior, Redistribution, Participation, Protest, Perceptions
JEL Classification: D63, D01, D72, D91

Check also: "We document a statistically significant and robust positive relation between risk aversion and the demand for redistribution that is also economically important. We show that previously used proxies for risk aversion (such as being an entrepreneur or having a history of unemployment) do not capture the effect of our measure of risk aversion but have distinctly different effects on the demand for redistribution." From Individual risk preferences and the demand for redistribution. Manja Gärtner, Johanna Mollerstrom and David Seim. Journal of Public Economics, v 153, September 2017, Pages 49-55. http://www.bipartisanalliance.com/2017/08/individual-risk-preferences-and-demand.html

An Empirical Test of Pure Altruism Theory on Blood Type and Blood Donation Behaviors: More donations when O-type individuals knew & believed that their blood can be medically transfused into individuals of all blood groups

Blood Type and Blood Donation Behaviors: An Empirical Test of Pure Altruism Theory. Shusaku Sasaki et al. ISER Discussion Paper No. 1029, https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3171957

Abstract: We examined whether the knowledge that your private donation has a large number of potential recipients causes you to give more or less. We found that the people with blood type O are more likely to have donated blood than those with other blood types, by using a Japan’s nationally representative survey. This association was found to be stronger in a subsample of individuals who knew and believed that blood type O can be medically transfused into individuals of all blood groups. However, we found that blood type O does not have any significant relationship with the other altruistic behaviors (registration for bone-marrow donation, intention to donate organs, and the making of monetary donations) and altruistic characteristics (altruism, trust, reciprocity, and cooperativeness). After further analyses, we confirmed that the wider number of potential recipients of blood type O donations promoted the blood-donation behaviors of the people with this blood type.

Keywords: ABO Blood Group, Blood Donation, Group Size, Public Good, Pure Altruism, Behavioral Economics

When A+B < A: Cognitive Bias in Experts’ Judgment of Environmental Impact

When A+B < A: Cognitive Bias in Experts’ Judgment of Environmental Impact. Mattias Holmgren et al. Front. Psychol., May 29 2018, https://doi.org/10.3389/fpsyg.2018.00823

Abstract: When ‘environmentally friendly’ items are added to a set of conventional items, people report that the total set will have a lower environmental impact even though the actual impact increases. One hypothesis is that this “negative footprint illusion” arises because people, who are susceptible to the illusion, lack necessary knowledge of the item’s actual environmental impact, perhaps coupled with a lack of mathematical skills. The study reported here addressed this hypothesis by recruiting participants (‘experts’) from a master’s program in energy systems, who thus have bachelor degrees in energy-related fields including academic training in mathematics. They were asked to estimate the number of trees needed to compensate for the environmental burden of two sets of buildings: one set of 150 buildings with conventional energy ratings and one set including the same 150 buildings but also 50 ‘green’ (energy-efficient) buildings. The experts reported that less trees were needed to compensate for the set with 150 conventional and 50 ‘green’ buildings compared to the set with only the 150 conventional buildings. This negative footprint illusion was as large in magnitude for the experts as it was for a group of novices without academic training in energy-related fields. We conclude that people are not immune to the negative footprint illusion even when they have the knowledge necessary to make accurate judgments.

Individuals discredit issue polls that suggest their views are in the minority, and those with greater political knowledge and methodological knowledge displayed this bias more strongly

Communicating Public Opinion in Post-Fact Politics: Biased Processing of Public Opinion Reports and Potential Journalistic Correctives. Ozan Kuru, PhD Thesis, 2018. https://deepblue.lib.umich.edu/bitstream/handle/2027.42/143952/okuru_1.pdf?sequence=1&isAllowed=y …

ABSTRACT: People rely on polls and other representations of public opinion in the media to update their political cognitions and behaviors. However, individuals’ preexisting beliefs can color how they perceive opinion reports and lead them to cherry-pick evidence that is congenial when presented with multiple options. Such biases result in distorted perceptions of public opinion, declining trust in journalism, and political polarization. Moreover, in today’s unprecedentedly polarized and contentious information environment, individuals often encounter contradictory messages from digital data-journalism and numerical evidence is regularly critiqued, fact-checked, or debunked on reasonable or unreasonable grounds. In such a cacophonous context, individuals’ biases in information processing might amplify. Through three large national survey experiments and one smaller study, this dissertation examines how news consumers’ attributes, the content of opinion reports, and patterns of media coverage can trigger or mitigate biases in public perceptions. In the first part, I document that individuals process reports of public opinion in biased ways when they evaluate issue polls, election polls in competitive contexts, and diverse metrics of public opinion. I also show that their levels of knowledge and education moderate the extent of these biases. In the second part, I find that the corrective potential of three journalistic remedies to reduce these biases are minimal and contingent upon individuals’ education levels. I discuss implications for political polarization, trust in the press and representatives, and democratic politics at large.

Age differences in moral judgment: Older adults are more deontological than younger adults

Age differences in moral judgment: Older adults are more deontological than younger adults. Simon McNair, Yasmina Okan, Constantinos Hadjichristidis, Wändi Bruine de Bruin. Journal of Behavioral Decision Making, https://doi.org/10.1002/bdm.2086

Abstract: In 2 studies, an older and a younger age group morally evaluated dilemmas contrasting a deontological judgment (do not harm others) against a utilitarian judgment (do what is best for the majority). Previous research suggests that deontological moral judgments are often underpinned by affective reactions and utilitarian moral judgments by deliberative thinking. Separately, research on the psychology of aging has shown that affect plays a more prominent role in the judgments and decision making of older (vs. younger) adults. Yet age remains a largely overlooked factor in moral judgment research. Here, we therefore investigated whether older adults would make more deontological judgments on the basis of experiencing different affective reactions to moral dilemmas as compared with younger adults. Results from 2 experiments indicated that older adults made significantly more deontological moral judgments. Mediation analyses revealed that the relationship between age and making more deontological moral judgments is partly explained by older adults exhibiting significantly more negative affective reactions and having more morally idealistic beliefs as compared with younger adults.

Mass polarization: individuals perceive more polarization than actually exists; perceived polarization is more strongly related to negative affective evaluations of out-parties and out-party candidates, voting, participation, trust, and efficacy than is actual polarization

The Differential Effects of Actual and Perceived Polarization. Adam M. Enders, Miles T. Armaly. Political Behavior, https://link.springer.com/article/10.1007/s11109-018-9476-2

Abstract: Recent work on the nature of mass polarization has revealed that individuals perceive more polarization than actually exists, meaning they assume that out-party members are farther from them on the liberal-conservative continuum than they actually are according to measures of their personal preferences. But what are the consequences of this biased perception, and how do they differ from the consequences of actual polarization? In this paper, we use American National Election Studies data to estimate actual and perceived polarization at the individual level from 1972–2012. We find that the two types of polarization, while related themselves, are differentially related to other attitudinal and behavioral outcomes of normative interest. Namely, we find that perceived polarization is more strongly related to negative affective evaluations of out-parties and out-party candidates, voting, participation, trust, and efficacy than is actual polarization, which shares much weaker relationships with these constructs.

People often fail to give gifts that achieve endurable satisfaction because they are so zealous to induce an enthusiastic instant smile

The Smile-Seeking Hypothesis: How Immediate Affective Reactions Motivate and Reward Gift Giving. Adelle X. Yang et al. Psychological Science, https://doi.org/10.1177/0956797618761373

Abstract: People making decisions for others often do not choose what their recipients most want. Prior research has generally explained such preference mismatches as decision makers mispredicting recipients’ satisfaction. We proposed that a “smile-seeking” motive is a distinct cause for these mismatches in the context of gift giving. After examining common gift options for which gift givers expect a difference between the recipients’ affective reaction (e.g., a smile when receiving the gift) and overall satisfaction, we found that givers often chose to forgo satisfaction-maximizing gifts and instead favor reaction-maximizing gifts. This reaction-maximizing preference was mitigated when givers anticipated not giving the gift in person. Results from six studies suggest that anticipated affective reactions powerfully shape gift givers’ choices and giving experiences, independently of (and even in spite of) anticipated recipient satisfaction. These findings reveal a dominant yet overlooked role that the display of affective reactions plays in motivating and rewarding gift-giving behaviors and shed new light on interpersonal decision making.

Keywords: interpersonal decision making, affective reaction, affect display, gift giving, preference discrepancy, open data, open materials, preregistered


Rolf Degen summarizing (https://twitter.com/DegenRolf/status/1009327050203844608): People often fail to give gifts that achieve endurable satisfaction because they are so zealous to induce an enthusiastic instant smile.

Gender Differences in Lying in Sender-receiver Games: A Meta-analysis

Capraro, Valerio. 2018. “Gender Differences in Lying in Sender-receiver Games: A Meta-analysis.” PsyArXiv. May 15. doi:10.17605/OSF.IO/JAEWT

Abstract: Whether there are gender differences in lying has been largely debated in the past decade. Previous studies found mixed results. To shed light on this topic, here I report a meta-analysis of 8,728 distinct observations, collected in 65 Sender-Receiver game treatments, by 14 research groups. Following previous work, I distinguish three types of lies: black lies, that benefit the liar at a cost for another person; altruistic white lies, that benefit another person at a cost for the liar; Pareto white lies, that benefit both the liar and another person. I find that: (i) males are significantly more likely than females to tell black lies (N=4,161); (ii) males are significantly more likely than females to tell altruistic white (N=2,940); (iii) results are inconclusive in the case of Pareto white lies (N=1,627).

Compensation... As stakes rise, participants resist the temptation to cheat but they are giving less to charity. Donors who indicated that they felt more moral gave less in high stakes condition. See High stakes: A little more cheating, a lot less charity. Zoe Rahwan et al. Journal of Economic Behavior & Organization, https://www.bipartisanalliance.com/2018/06/what-if-any-hidden-costs-of-overcoming.html

Texting and Driving: Is It Just Moral Panic?

Texting and Driving: Is It Just Moral Panic? David R. White, Daniel P. Hepworth & Michael S. Zidar. Deviant Behavior, https://doi.org/10.1080/01639625.2018.1479915

ABSTRACT: Significant public efforts have been mounted to stop the perceived epidemic of texting and driving, especially among younger drivers. However, despite the taken-for-granted nature of these fears, cell phones are reported as a contributing factor in only about 1% of all crashes. This study examines 11 years of crash data from Kentucky to demonstrate that despite the exponential growth of cell phones in American culture, cell phone-related crashes have remained stable over time, and they represent far less of a public health risk than most people are led to believe. The conclusions are presented in the context of moral panic theory.

From 2017, The lifestyle paradox: adverse effects of Internet use on self-rated health status

From 2017, The lifestyle paradox: adverse effects of Internet use on self-rated health status. Ulrike Deetjen. Information, Communication & Society, Volume 21, 2018 - Issue 10, Pages 1322-1336, https://doi.org/10.1080/1369118X.2017.1313293

ABSTRACT: How individuals subjectively rate their health status stands in close relationship with both actual health status and mortality. Previous research has shown that Internet use in general, and online health information seeking in particular, increases self-rated health status. However, this relationship may not always hold true: Albrecht and Devlieger’s [(1999). The disability paradox: high quality of life against all odds. Social Science & Medicine, 48(8), 977–988] disability paradox captures that those with severe health conditions may still perceive their health as very good. This paper introduces the lifestyle paradox as another exception to the generally positive relationship: those without health conditions may still perceive their health as inferior based on general and health-related Internet use. This paper corroborates the lifestyle paradox empirically using quantitative data from the Oxford Internet Surveys connected to the national census through spatial microsimulation, and 43 qualitative interviews conducted with a subsample of the participants from the quantitative strand. A theoretical explanation for this phenomenon is provided based on the concepts of agenda setting and reference groups: the online realm may make lifestyle topics more salient, and provides a variety of opportunities for comparing oneself to others, thereby influencing how people evaluate their own health. Through describing, verifying and explaining the lifestyle paradox, this paper contributes theoretical and empirical insights into the relationship between Internet use and self-rated health status, and thereby adds to the scientific debate around tangible outcomes of Internet use.

Customers standing in the middle of a queue are positively affected by increasing queue lengths; it seems they infer that the product or service is more valuable as the queue behind worsens; those at the front feel pressured and suffer

Breathing Down Your Neck!: The Impact of Queues on Customers Using a Retail Service. Martin Dahm et al. Journal of Retailing, Volume 94, Issue 2, June 2018, Pages 217-230. https://doi.org/10.1016/j.jretai.2018.04.002

Highlights
•    We explore the effects of waiting lines on the person at the front of a queue.
•    Effects are found on an affective, an evaluative, and a behavioral level.
•    Feelings of social pressure are shown to mediate the effects.
•    Own waiting time acts as a significant moderator of the identified relationships.
•    Two managerial interventions are found to attenuate these effects.

Abstract: While a rich body of research has examined the psychological costs and benefits of queuing, this research focuses on the customer currently using a retail service and examines how this customer is affected by lines forming at his or her back. Drawing on Social Impact Theory, we postulate that customers feel pressured by people waiting behind them and that this feeling of social pressure leads to more negative affective experiences, poorer participation in co-creation settings, and lower perceptions of service quality. Five field and controlled experimental studies tested these predictions and also explored how retailers can reduce the adverse impact of queues. Studies 1A and 1B show that the customer’s experience deteriorates as queue length increases and that perceptions of social pressure mediate this effect. Studies 2A and 2B show that this effect is moderated by customers’ own waiting time such that customers are more affected by queues forming at their backs when their own waiting time decreases. Finally, study 3 identifies two strategies to attenuate the negative effects of waiting lines, namely explicitly reassuring the focal customer that she need not feel pressured to be efficient and removing the waiting customers from the line of vision of the focal customer.

Inbred males should have lower reproductive success than outbred males among other things because of inbreeding depression in attractiveness to females & a reduced lifespan; an inbred male of a given age is more motivated to seize a current mating opportunity than an outbred male

An experimental study: Does inbreeding increase the motivation to mate? Raïssa A. de Boer, Marcel Eens, Wendt Müller. PLOS One, https://doi.org/10.1371/journal.pone.0199182

Abstract: Inbreeding is a central topic in evolutionary biology and ecology and is of major concern for the conservation of endangered species. Yet, it remains challenging to comprehend the fitness consequences of inbreeding, because studies typically focus only on short-term effects on inbreeding in the offspring (e.g. survival until independence). However, there is no a priori reason to assume that inbreeding has no more effects in adulthood. Specifically, inbred males should have lower reproductive success than outbred males among other things because of inbreeding depression in attractiveness to females and a reduced lifespan. Such differences in future reproductive value should affect male mating behaviour, such that an inbred male of a given age should be more motivated to seize a current mating opportunity than an outbred male of the same age. We used an inventive experimental set-up that enabled us to assess male behaviour in relation to an apparent mating opportunity while excluding potential confounding effects of female preference. Age-, weight-, and size-matched inbred and outbred male canaries (Serinus canaria) were presented with a female that only one male at a time could access visually via a ‘peephole’ and thus when both males were equally interested in seizing the apparent mating opportunity this would result in contest. We find that inbred males spent more than twice as much time ‘peeping’ at the female than outbred males, suggesting that inbreeding indeed causes different behavioural responses to an apparent mating opportunity. Our study is among the first to highlight that inbreeding affects male mating behaviour, and therewith potentially male-male competition, which should be taken into account in order to understand the full range of inbreeding effects on fitness.

More intelligent people are more rational (consistency between attitudes and preferences) in their political preferences, except the economic attitudes

Intelligence and the rationality of political preferences. Yoav Ganzach. Intelligence, Volume 69, July–August 2018, Pages 59-70. https://doi.org/10.1016/j.intell.2018.05.002

Highlights
•    We show that in political behavior intelligence is related to rationality.
•    Intelligence is operationalized as achievement in standard mental ability tests.
•    Rationality is operationalized as consistency between attitudes and preferences.
•    Political attitudes are measured on a conservative-liberal dimension.
•    Political preferences are measured by party affiliation.

Abstract: I study the relationship between intelligence and the rationality of political preferences. Intelligence is operationalized as achievement in standard mental ability tests, rationality as consistency between political attitudes and political preferences and consistency as the effect of the interaction between intelligence and political attitudes on political preferences. Political preferences are measured by party affiliation – support for the Democratic versus the Republican Party in the US – and political attitudes are measured on a conservative-liberal dimension. I analyze three large representative American databases and find that for global political attitudes and for specific social attitudes, but not for specific economic attitudes, intelligence is associated with a considerable more attitude-preference consistency (ΔR2 of 2.7% 0.9%, and 0.9%, in Study 1, 2 and 3, respectively, corresponding to f2 of 0.014, 0.011 and 0.035, respectively). I conclude with a discussion of possible causal processes underlying the observed relationship between intelligence and consistency of political attitudes.

Same-sex courtship behaviors in male-biased populations: Found more male-male sexual interactions in male-biased populations and a significant decrease of these behaviors after consecutive days of observation

Same-sex courtship behaviors in male-biased populations: evidence for the mistaken identity hypothesis. Anthony Macchiano, Imran Razik, Maria Sagot. acta ethologica, https://link.springer.com/article/10.1007/s10211-018-0293-8

Abstract: Same-sex sexual behaviors (SSSB) have been recorded in nearly all major animal groups and are often found in populations with skewed sex ratios (SR). Here, we study the role of sex ratios in the frequency of SSSB to better understand the conditions that give rise to such puzzling behaviors. We observed SSSB in multiple populations of the common fruit fly (Drosophila melanogaster) after manipulation of sex ratios. We also recorded male responses after being pursued by other males. We found more male-male sexual interactions in male-biased populations and a significant decrease of these behaviors after consecutive days of observation. Males pursued by other males reacted to such encounters. Our results provide support for the mistaken identity hypothesis, in which males are unable to differentiate between sexes at first encounter. With this work, we help elucidate possible social conditions that facilitate the appearance of such intriguing behaviors in nature.

Keywords: Same-sex interactions Homosexual behavior Sex ratios Drosophila melanogaster

Sex-based divergence of mechanisms underlying pain and pain inhibition: The female is more sensitive and less tolerant of pain

Sex-based divergence of mechanisms underlying pain and pain inhibition. Jeffrey S Mogil. Current Opinion in Behavioral Sciences, Volume 23, October 2018, Pages 113–117. https://doi.org/10.1016/j.cobeha.2018.05.005

Abstract: Whether there are sex differences in pain sensitivity is a topic of enduring interest. This question has essentially been answered, with a clear consensus emerging in the direction of the difference in humans. More importantly, though, there is also much evidence for robust qualitative differences in pain mechanisms between the sexes, in both rodents and humans, predictive of the eventual sex-specific treatment of pain. This review details some of the known differences in pain circuitry between males and females, and asks whether pain is unique in featuring such divergence.

Social observation promoted deontological judgments especially for moral dilemmas involving direct physical harm (i.e., the personal moral dilemmas), yet with an overall decrease in decision confidence and significant prolongation of reaction time

Social observation increases deontological judgments in moral dilemmas. Minwoo Lee, Sunhae Sul, Hackjin Kim. Evolution and Human Behavior, https://doi.org/10.1016/j.evolhumbehav.2018.06.004

Abstract: A concern for positive reputation is one of the core motivations underlying various social behaviors in humans. The present study investigated how experimentally induced reputation concern modulates judgments in moral dilemmas. In a mixed-design experiment, participants were randomly assigned to the observed vs. the control group and responded to a series of trolley-type moral dilemmas either in the presence or absence of observers, respectively. While no significant baseline difference in personality traits and moral decision style were found across two groups of participants, our analyses revealed that social observation promoted deontological judgments especially for moral dilemmas involving direct physical harm (i.e., the personal moral dilemmas), yet with an overall decrease in decision confidence and significant prolongation of reaction time. Moreover, participants in the observed group, but not in the control group, showed the increased sensitivities towards warmth vs. competence traits words in the lexical decision task performed after the moral dilemma task. Our findings suggest that reputation concern, once triggered by the presence of potentially judgmental others, could activate a culturally dominant norm of warmth in various social contexts. This could, in turn, induce a series of goal-directed processes for self-presentation of warmth, leading to increased deontological judgments in moral dilemmas. The results of the present study provide insights into the reputational consequences of moral decisions that merit further exploration.

Keywords: Reputation concern; Moral dilemma; Social observation; Deontology; Warmth

Collective Narcissism: Americans Exaggerate the Role of Their Home State in Appraising U.S. History

Collective Narcissism: Americans Exaggerate the Role of Their Home State in Appraising U.S. History. Adam L. Putnam et al. Psychological Science, https://doi.org/10.1177/0956797618772504

Abstract: Collective narcissism—a phenomenon in which individuals show excessively high regard for their own group—is ubiquitous in studies of small groups. We examined how Americans from the 50 U.S. states (N = 2,898) remembered U.S. history by asking them, “In terms of percentage, what do you think was your home state’s contribution to the history of the United States?” The mean state estimates ranged from 9% (Iowa) to 41% (Virginia), with the total contribution for all states equaling 907%, indicating strong collective narcissism. In comparison, ratings provided by nonresidents for states were much lower (but still high). Surprisingly, asking people questions about U.S. history before they made their judgment did not lower estimates. We argue that this ethnocentric bias is due to ego protection, selective memory retrieval processes involving the availability heuristic, and poor statistical reasoning. This study shows that biases that influence individual remembering also influence collective remembering.

Keywords: collective memory, availability bias, egocentrism, narcissism, judgment, open data, open materials, and preregistered