Cross-country relationships between life expectancy, intertemporal choice and age at first birth. By Adam Bulley & Gillian Pepper
Evolution and Human Behavior, http://www.ehbonline.org/article/S1090-5138(17)30007-7/abstract
Abstract: Humans, like other animals, typically discount the value of delayed rewards relative to those available in the present. From an evolutionary perspective, prioritising immediate rewards is a predictable response to high local mortality rates, as is an acceleration of reproductive scheduling. In a sample of 46 countries, we explored the cross-country relationships between average life expectancy, intertemporal choice, and women's age at first birth. We find that, across countries, lower life expectancy is associated with both a smaller percentage of people willing to wait for a larger but delayed reward, as well as a younger age at first birth. These results, which hold when controlling for region and economic pressures (GDP-per capita), dovetail with findings at the individual level to suggest that life expectancy is an important ecological predictor of both intertemporal and reproductive decision-making.
Monday, July 10, 2017
What Explains Personality Covariation? A Test of the Socioecological Complexity Hypothesis
What Explains Personality Covariation? A Test of the Socioecological Complexity Hypothesis. By Aaron Lukaszewski et al.
Social Psychological and Personality Science, http://journals.sagepub.com/doi/abs/10.1177/1948550617697175?journalCode=sppa
Abstract: Correlations among distinct behaviors are foundational to personality science, but the field remains far from a consensus regarding the causes of such covariation. We advance a novel explanation for personality covariation, which views trait covariance as being shaped within a particular socioecology. We hypothesize that the degree of personality covariation observed within a society will be inversely related to the society’s socioecological complexity, that is, its diversity of social and occupational niches. Using personality survey data from participant samples in 55 nations (N = 17,637), we demonstrate that the Big Five dimensions are more strongly intercorrelated in less complex societies, where the complexity is indexed by nation-level measures of economic development, urbanization, and sectoral diversity. This inverse relationship is robust to control variables accounting for a number of methodological and response biases. Our findings support the socioecological complexity hypothesis and more generally bolster functionalist accounts of trait covariation.
Social Psychological and Personality Science, http://journals.sagepub.com/doi/abs/10.1177/1948550617697175?journalCode=sppa
Abstract: Correlations among distinct behaviors are foundational to personality science, but the field remains far from a consensus regarding the causes of such covariation. We advance a novel explanation for personality covariation, which views trait covariance as being shaped within a particular socioecology. We hypothesize that the degree of personality covariation observed within a society will be inversely related to the society’s socioecological complexity, that is, its diversity of social and occupational niches. Using personality survey data from participant samples in 55 nations (N = 17,637), we demonstrate that the Big Five dimensions are more strongly intercorrelated in less complex societies, where the complexity is indexed by nation-level measures of economic development, urbanization, and sectoral diversity. This inverse relationship is robust to control variables accounting for a number of methodological and response biases. Our findings support the socioecological complexity hypothesis and more generally bolster functionalist accounts of trait covariation.
Cultural differences in room size perception
Cultural differences in room size perception. By Aurelie Saulton et al.
PLoS ONE, April 2017, http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0176115
Abstract: Cultural differences in spatial perception have been little investigated, which gives rise to the impression that spatial cognitive processes might be universal. Contrary to this idea, we demonstrate cultural differences in spatial volume perception of computer generated rooms between Germans and South Koreans. We used a psychophysical task in which participants had to judge whether a rectangular room was larger or smaller than a square room of reference. We systematically varied the room rectangularity (depth to width aspect ratio) and the viewpoint (middle of the short wall vs. long wall) from which the room was viewed. South Koreans were significantly less biased by room rectangularity and viewpoint than their German counterparts. These results are in line with previous notions of general cognitive processing strategies being more context dependent in East Asian societies than Western ones. We point to the necessity of considering culturally-specific cognitive processing strategies in visual spatial cognition research.
PLoS ONE, April 2017, http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0176115
Abstract: Cultural differences in spatial perception have been little investigated, which gives rise to the impression that spatial cognitive processes might be universal. Contrary to this idea, we demonstrate cultural differences in spatial volume perception of computer generated rooms between Germans and South Koreans. We used a psychophysical task in which participants had to judge whether a rectangular room was larger or smaller than a square room of reference. We systematically varied the room rectangularity (depth to width aspect ratio) and the viewpoint (middle of the short wall vs. long wall) from which the room was viewed. South Koreans were significantly less biased by room rectangularity and viewpoint than their German counterparts. These results are in line with previous notions of general cognitive processing strategies being more context dependent in East Asian societies than Western ones. We point to the necessity of considering culturally-specific cognitive processing strategies in visual spatial cognition research.
Reverse Ego-Depletion: Acts of Self-Control Can Improve Subsequent Performance in Indian Cultural Contexts
Reverse Ego-Depletion: Acts of Self-Control Can Improve Subsequent Performance in Indian Cultural Contexts. By Krishna Savani & Veronika Job
Journal of Personality and Social Psychology, https://www.ncbi.nlm.nih.gov/pubmed/28581300
Abstract: The strength model of self-control has been predominantly tested with people from Western cultures. The present research asks whether the phenomenon of ego-depletion generalizes to a culture emphasizing the virtues of exerting mental self-control in everyday life. A pilot study found that whereas Americans tended to believe that exerting willpower on mental tasks is depleting, Indians tended to believe that exerting willpower is energizing. Using dual task ego-depletion paradigms, Studies 1a, 1b, and 1c found reverse ego-depletion among Indian participants, such that participants exhibited better mental self-control on a subsequent task after initially working on strenuous rather than nonstrenuous cognitive tasks. Studies 2 and 3 found that Westerners exhibited the ego-depletion effect whereas Indians exhibited the reverse ego-depletion effect on the same set of tasks. Study 4 documented the causal effect of lay beliefs about whether exerting willpower is depleting versus energizing on reverse ego-depletion with both Indian and Western participants. Together, these studies reveal the underlying basis of the ego-depletion phenomenon in culturally shaped lay theories about willpower.
Journal of Personality and Social Psychology, https://www.ncbi.nlm.nih.gov/pubmed/28581300
Abstract: The strength model of self-control has been predominantly tested with people from Western cultures. The present research asks whether the phenomenon of ego-depletion generalizes to a culture emphasizing the virtues of exerting mental self-control in everyday life. A pilot study found that whereas Americans tended to believe that exerting willpower on mental tasks is depleting, Indians tended to believe that exerting willpower is energizing. Using dual task ego-depletion paradigms, Studies 1a, 1b, and 1c found reverse ego-depletion among Indian participants, such that participants exhibited better mental self-control on a subsequent task after initially working on strenuous rather than nonstrenuous cognitive tasks. Studies 2 and 3 found that Westerners exhibited the ego-depletion effect whereas Indians exhibited the reverse ego-depletion effect on the same set of tasks. Study 4 documented the causal effect of lay beliefs about whether exerting willpower is depleting versus energizing on reverse ego-depletion with both Indian and Western participants. Together, these studies reveal the underlying basis of the ego-depletion phenomenon in culturally shaped lay theories about willpower.
Kinship Systems, Cooperation and the Evolution of Culture
Kinship Systems, Cooperation and the Evolution of Culture. By Benjamin Enke
NBER Working Paper, June 2017, http://www.nber.org/papers/w23499
Abstract: Cultural psychologists and anthropologists argue that societies have developed heterogeneous systems of social organization to cope with social dilemmas, and that an entire bundle of cultural characteristics has coevolved to enforce cooperation within these different systems. This paper develops a measure of the historical tightness of kinship structures to provide empirical evidence for this large body of theories. In the data, societies with loose ancestral kinship ties cooperate and trust broadly, which is apparently sustained through a belief in moralizing gods, universally applicable moral principles, feelings of guilt, and large-scale institutions. Societies with a historically tightly knit kinship structure, on the other hand, exhibit strong in-group favoritism: they cheat on and are distrusting of out-group members, but readily support in-group members in need. This cooperation scheme is enforced by moral values of in-group loyalty, conformity to tight social norms, emotions of shame, and strong local institutions. These relationships hold across historical ethnicities, contemporary countries, ethnicities within countries, and migrants. The results suggest that religious beliefs, language, emotions, morality, and social norms all coevolved to support specific social cooperation systems.
NBER Working Paper, June 2017, http://www.nber.org/papers/w23499
Abstract: Cultural psychologists and anthropologists argue that societies have developed heterogeneous systems of social organization to cope with social dilemmas, and that an entire bundle of cultural characteristics has coevolved to enforce cooperation within these different systems. This paper develops a measure of the historical tightness of kinship structures to provide empirical evidence for this large body of theories. In the data, societies with loose ancestral kinship ties cooperate and trust broadly, which is apparently sustained through a belief in moralizing gods, universally applicable moral principles, feelings of guilt, and large-scale institutions. Societies with a historically tightly knit kinship structure, on the other hand, exhibit strong in-group favoritism: they cheat on and are distrusting of out-group members, but readily support in-group members in need. This cooperation scheme is enforced by moral values of in-group loyalty, conformity to tight social norms, emotions of shame, and strong local institutions. These relationships hold across historical ethnicities, contemporary countries, ethnicities within countries, and migrants. The results suggest that religious beliefs, language, emotions, morality, and social norms all coevolved to support specific social cooperation systems.
Russians Inhibit the Expression of Happiness to Strangers: Testing a Display Rule Model
Russians Inhibit the Expression of Happiness to Strangers: Testing a Display Rule Model. By Kennon Sheldon et al.
Journal of Cross-Cultural Psychology, June 2017, Pages 718-733, http://journals.sagepub.com/doi/abs/10.1177/0022022117699883?ai=1gvoi&mi=3ricys&af=R
Abstract: Cultural stereotypes and considerable psychological research suggest that Russians are less happy and more stoic than Americans and Westerners. However, a second possibility is simply that cultural norms deter Russians from displaying happiness that they actually feel. To test this second possibility, three studies compared the emotional inhibition tendencies in U.S. and Russian student samples. Although Russians and Americans were no different on subjective well-being (SWB), a consistent three-way interaction was found such that Russians (compared with Americans) reported greater inhibition of the expression of happiness (vs. unhappiness), but mainly to strangers (vs. friends/family). Russians also viewed their peers and countrymen as behaving similarly. Furthermore, a consistent interaction was found such that the degree of happiness inhibition with strangers was negatively correlated with SWB in the U.S. samples but was unrelated to SWB in the Russian samples. Given the equivalent levels of SWB observed in these data, we suggest that Russians may not be less happy than Americans, as this would illogically entail that they exaggerate their SWB reports while also claiming to inhibit their expression of happiness. Implications for emotion researchers and international relations are considered.
Journal of Cross-Cultural Psychology, June 2017, Pages 718-733, http://journals.sagepub.com/doi/abs/10.1177/0022022117699883?ai=1gvoi&mi=3ricys&af=R
Abstract: Cultural stereotypes and considerable psychological research suggest that Russians are less happy and more stoic than Americans and Westerners. However, a second possibility is simply that cultural norms deter Russians from displaying happiness that they actually feel. To test this second possibility, three studies compared the emotional inhibition tendencies in U.S. and Russian student samples. Although Russians and Americans were no different on subjective well-being (SWB), a consistent three-way interaction was found such that Russians (compared with Americans) reported greater inhibition of the expression of happiness (vs. unhappiness), but mainly to strangers (vs. friends/family). Russians also viewed their peers and countrymen as behaving similarly. Furthermore, a consistent interaction was found such that the degree of happiness inhibition with strangers was negatively correlated with SWB in the U.S. samples but was unrelated to SWB in the Russian samples. Given the equivalent levels of SWB observed in these data, we suggest that Russians may not be less happy than Americans, as this would illogically entail that they exaggerate their SWB reports while also claiming to inhibit their expression of happiness. Implications for emotion researchers and international relations are considered.
Coarse Grades: Informing the Public by Withholding Information
Coarse Grades: Informing the Public by Withholding Information. By Rick Harbaugh & Eric Rasmusen
American Economic Journal: Microeconomics, https://www.aeaweb.org/articles?id=10.1257/mic.20130078
Abstract: Certifiers of quality often report only coarse grades to the public despite having measured quality more finely, e.g., "Pass" or "Certified" instead of "73 out of 100". Why? We show that coarse grades result in more information being provided to the public because the coarseness encourages those of middling quality to apply for certification. Dropping exact grading in favor of the best coarse grading scheme reduces public uncertainty because the extra participation outweighs the coarser reporting. In some circumstances, the coarsest meaningful grading scheme, pass-fail grading, results in the most information.
American Economic Journal: Microeconomics, https://www.aeaweb.org/articles?id=10.1257/mic.20130078
Abstract: Certifiers of quality often report only coarse grades to the public despite having measured quality more finely, e.g., "Pass" or "Certified" instead of "73 out of 100". Why? We show that coarse grades result in more information being provided to the public because the coarseness encourages those of middling quality to apply for certification. Dropping exact grading in favor of the best coarse grading scheme reduces public uncertainty because the extra participation outweighs the coarser reporting. In some circumstances, the coarsest meaningful grading scheme, pass-fail grading, results in the most information.
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