1
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Sadr-Bazzaz M, Talaei A, Sadeghi MJ, Moradi M, Ahmadisoleymani Z, Vasey PL. Occupational Preferences, Childhood Behavior, and Openness: The Role of Sex, Sexual Orientation, and Gender Identity in Iran. ARCHIVES OF SEXUAL BEHAVIOR 2024:10.1007/s10508-024-02865-x. [PMID: 38710965 DOI: 10.1007/s10508-024-02865-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 05/08/2024]
Abstract
Previous research suggests that both same-sex attraction and the personality trait "openness" are associated with sex-atypical preferences and behaviors. Here, we examined the links between adulthood occupational preferences, childhood play behavior, and openness among Iranian cisgender gynephilic males (n = 228), cisgender ambiphilic males (n = 48), cisgender androphilic males (n = 178), transgender androphilic males (n = 58), cisgender androphilic females (n = 226), cisgender ambiphilic females (n = 94), cisgender gynephilic females (n = 31), and transgender gynephilic females (n = 121) from Iran. Cisgender and transgender same-sex attracted males and females exhibited sex-atypical occupational preferences with the latter group showing even more sex-atypicality than the former. The personality trait openness did not differ between cisgender groups. Transgender androphilic males had a significantly higher mean score for openness compared to cisgender androphilic females and transgender gynephilic females, whereas transgender gynephilic females had a significantly lower mean score compared to cisgender androphilic males. In both males and females, childhood sex-atypicality, same-sex attraction, and openness were associated with sex-atypical occupational preferences. Our findings from Iran provides cross-cultural support for interconnectedness of childhood and adulthood sex-atypicality, openness, and same-sex attraction in males and females who are cisgender and transgender.
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Affiliation(s)
- Mostafa Sadr-Bazzaz
- Department of Psychology, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.
| | - Ali Talaei
- Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Marjan Moradi
- Department of Psychology, Toos Institute of Higher Education, Mashhad, Iran
| | | | - Paul L Vasey
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
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2
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Cross CP, Boothroyd LG, Jefferson CA. Agent-based models of the cultural evolution of occupational gender roles. ROYAL SOCIETY OPEN SCIENCE 2023; 10:221346. [PMID: 37388313 PMCID: PMC10300665 DOI: 10.1098/rsos.221346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 06/01/2023] [Indexed: 07/01/2023]
Abstract
The causes of sex differences in human behaviour are contested, with 'evolutionary' and 'social' explanations often being pitted against each other in the literature. Recent work showing positive correlations between indices of gender equality and the size of sex differences in behaviour has been argued to show support for 'evolutionary' over 'social' approaches. This argument, however, neglects the potential for social learning to generate arbitrary gender segregation. In the current paper we simulate, using agent-based models, a population where agents exist as one of two 'types' and can use social information about which types of agents are performing which 'roles' within their environment. We find that agents self-segregate into different roles even where real differences in performance do not exist, if there is a common belief (modelled as priors) that group differences may exist in 'innate' competence. Facilitating role changes such that agents should move without cost to the predicted highest-rewards for their skills (i.e. fluidity of the labour market) reduced segregation, while forcing extended exploration of different roles eradicated gender segregation. These models are interpreted in terms of bio-cultural evolution, and the impact of social learning on the expression of gender roles.
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Affiliation(s)
- C P Cross
- School of Psychology & Neuroscience, University of St Andrews, St Mary's College, St Andrew, Fife KY16 9AZ, UK
| | - L G Boothroyd
- Department of Psychology, Durham University, South Road, Durham DH1 3LE, UK
| | - C A Jefferson
- School of Computer Science, University of St Andrews, Jack Cole Building, North Haugh, St Andrews, Fife KY16 9SX, UK
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3
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Hildebrandt A, Jäckle S. Particularly in Highly Developed and More Gender Egalitarian Societies: Sex Differences in Attitudes Towards Homosexuality. JOURNAL OF SEX RESEARCH 2023:1-14. [PMID: 37126123 DOI: 10.1080/00224499.2023.2198500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Time and again, research has shown that men are less accepting of homosexuality than women. Studies on such attitudinal sex differences have been overwhelmingly conducted in Western democracies, however, with a special focus on the U.S. Whether the sex difference in attitudes towards homosexuality is a worldwide phenomenon has not yet been investigated. Using data from the seventh wave of the World Values Survey (2017-2021), this article provides evidence that the sex difference is not universal, but limited almost exclusively to Europe and the Americas, indicating the need to replicate studies conducted in these societies in global cross-country comparisons. Contrary to predictions of the social role theory or biosocial construction theory, but in line with predictions from evolutionary psychology and a growing number of empirical studies in this field, the sex difference in attitudes towards homosexuality widens with rising gender equality and development, especially when the two coincide.
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4
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Zhao Q, Zhou L, Ren Q, Lu X, Sun X, Neumann DL, Dai Q, Hu L. Culture-sex interaction in self-report empathy: The theory and meta-analyses. Psych J 2023; 12:5-16. [PMID: 36104300 DOI: 10.1002/pchj.598] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 08/08/2022] [Indexed: 02/04/2023]
Abstract
Empathy is sharing and understanding others' emotions. Recently, researchers identified larger Western-Asian cultural differences in self-report empathy with females relative to males (i.e., the culture-sex interaction theory). Neglecting this phenomenon, previous researchers focused on identifying the cultural impact on empathy per se and reported divergent results. This meta-analysis aims to reveal the heterogeneity of the earlier publications and decode the heterogeneity as per the culture-sex interaction. The current results suggested the following: First, the cultural impact on empathy increased along with three sex stratification categories (male-only, mixed-sex, and female-only, in that order). Second, the effect size statistically differed between the binary classifications of sex (female-only > male-only). Third, the mixed-sex samples' effect size was positively regressed on the samples' sex ratio (i.e., percentage of females). The current results revealed the heterogeneity of previous publications and highlighted the significance of the culture-sex interaction effect on empathy for future investigations.
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Affiliation(s)
- Qing Zhao
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Lili Zhou
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China.,School of Psychology, Shanghai University of Sport, Shanghai, China
| | - Qiaoyue Ren
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Xuejing Lu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoxiao Sun
- Department of Psychology, Army Medical University, Chongqing, China
| | - David L Neumann
- School of Applied Psychology, Griffith University, Gold Coast, Australia
| | - Qin Dai
- Department of Psychology, Army Medical University, Chongqing, China
| | - Li Hu
- CAS Key Laboratory of Mental Health, Institute of Psychology, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
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5
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Pugh ZH, Huang J, Leshin J, Lindquist KA, Nam CS. Culture and gender modulate dlPFC integration in the emotional brain: evidence from dynamic causal modeling. Cogn Neurodyn 2023; 17:153-168. [PMID: 36704624 PMCID: PMC9871122 DOI: 10.1007/s11571-022-09805-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/12/2022] [Accepted: 03/26/2022] [Indexed: 01/29/2023] Open
Abstract
Past research has recognized culture and gender variation in the experience of emotion, yet this has not been examined on a level of effective connectivity. To determine culture and gender differences in effective connectivity during emotional experiences, we applied dynamic causal modeling (DCM) to electroencephalography (EEG) measures of brain activity obtained from Chinese and American participants while they watched emotion-evoking images. Relative to US participants, Chinese participants favored a model bearing a more integrated dorsolateral prefrontal cortex (dlPFC) during fear v. neutral experiences. Meanwhile, relative to males, females favored a model bearing a less integrated dlPFC during fear v. neutral experiences. A culture-gender interaction for winning models was also observed; only US participants showed an effect of gender, with US females favoring a model bearing a less integrated dlPFC compared to the other groups. These findings suggest that emotion and its neural correlates depend in part on the cultural background and gender of an individual. To our knowledge, this is also the first study to apply both DCM and EEG measures in examining culture-gender interaction and emotion.
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Affiliation(s)
- Zachary H. Pugh
- Department of Psychology, North Carolina State University, Raleigh, NC USA
| | - Jiali Huang
- Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, NC USA
| | - Joseph Leshin
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapell Hill, NC USA
| | - Kristen A. Lindquist
- Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapell Hill, NC USA
| | - Chang S. Nam
- Department of Industrial and Systems Engineering, North Carolina State University, Raleigh, NC USA
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6
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Are women truly “more emotional” than men? Sex differences in an indirect model-based measure of emotional feelings. CURRENT PSYCHOLOGY 2023. [DOI: 10.1007/s12144-022-04227-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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7
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Balducci M. Linking gender differences with gender equality: A systematic-narrative literature review of basic skills and personality. Front Psychol 2023; 14:1105234. [PMID: 36874846 PMCID: PMC9978710 DOI: 10.3389/fpsyg.2023.1105234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/27/2023] [Indexed: 02/18/2023] Open
Abstract
There is controversy regarding whether gender differences are smaller or larger in societies that promote gender equality highlighting the need for an integrated analysis. This review examines literature correlating, on a national level, gender differences in basic skills-mathematics, science (including attitudes and anxiety), and reading-as well as personality, to gender equality indicators. The aim is to assess the cross-national pattern of these differences when linked to measures of gender equality and explore new explanatory variables that can shed light on this linkage. The review was based on quantitative research relating country-level measures of gender differences to gender equality composite indices and specific indicators. The findings show that the mathematics gender gap from the PISA and TIMMS assessments, is not linked to composite indices and specific indicators, but gender differences are larger in gender-equal countries for reading, mathematics attitudes, and personality (Big Five, HEXACO, Basic Human Values, and Vocational Interests). Research on science and overall scores (mathematics, science, and reading considered together) is inconclusive. It is proposed that the paradox in reading results from the interrelation between basic skills and the attempt to increase girls' mathematics abilities both acting simultaneously while the paradox in mathematics attitudes might be explained by girls being less exposed to mathematics than boys. On the other hand, a more nuanced understanding of the gender equality paradox in personality is advanced, in which a gene-environment-cultural interplay accounts for the phenomenon. Challenges for future cross-national research are discussed.
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Affiliation(s)
- Marco Balducci
- Department of Social Research, University of Turku, Turku, Finland
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8
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Deaner RO, Dunlap LC, Bleske-Rechek A. Sex Differences in Competitiveness in Massively Multiplayer Online Role-Playing Games (MMORPGs). EVOLUTIONARY PSYCHOLOGY 2022; 20:14747049221109388. [PMID: 35733406 PMCID: PMC10303450 DOI: 10.1177/14747049221109388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 05/14/2022] [Accepted: 06/09/2022] [Indexed: 11/17/2022] Open
Abstract
Sex differences in the use of competitive tactics have been well established. Although many factors may contribute to these sex differences, according to social role theory (SRT), stereotypes and expectations about men's and women's typical social roles are crucial. We addressed the potential impact of social roles by studying massively multiplayer online role-playing games (MMORPGs), a setting where individuals represent themselves with avatars and thus enjoy the opportunity to compete without regard to the typical expectations and behaviors associated with men's and women's roles. We surveyed players via MTurk (63 women, 191 men) and Reddit (166 women, 1,326 men) regarding their frequency of engaging in five competitive behaviors and the sex and role of their primary avatar. As expected, there were reliable sex differences in competitiveness: men were more likely than women to engage in player-versus-player duels (MTurk d = 0.19; Reddit d = 0.51), do solo runs of difficult content (0.30, 0.35), and work to acquire expensive items (0.32, 0.19); women were more likely than men to seek in-game awards (-0.38, -0.36) and spend real-world money on expensive microtransactions (-0.16, -0.27). Contrary to SRT, these sex differences in forms of competitive behavior were generally unrelated to players' chosen avatar sex or avatar role. These results instead indicate that sex differences in competitiveness largely reflect evolved predispositions.
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Affiliation(s)
- Robert O. Deaner
- Department of Psychology, Grand Valley State
University, Allendale, MI, USA
| | - Lucretia C. Dunlap
- Department of Psychological and Brain
Sciences, Villanova University, Villanova, PA, USA
| | - April Bleske-Rechek
- Department of Psychology, University of Wisconsin-Eau
Claire, Eau Claire, WI, USA
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9
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Toward a biological basis of the FFM Meta-traits: Associations between the Fisher Type Indicator (FTI) temperament construct and the hierarchical Five Factor Model (FFM) of personality. PERSONALITY AND INDIVIDUAL DIFFERENCES 2022. [DOI: 10.1016/j.paid.2021.111266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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10
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Eriksson K, Dickins TE, Strimling P. Global sex differences in hygiene norms and their relation to sex equality. PLOS GLOBAL PUBLIC HEALTH 2022; 2:e0000591. [PMID: 36962769 PMCID: PMC10021886 DOI: 10.1371/journal.pgph.0000591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Accepted: 05/11/2022] [Indexed: 05/05/2023]
Abstract
Strict norms about hygiene may sometimes have health benefits but may also be a burden. Based on research in the United States, it has been suggested that women traditionally shoulder responsibility for hygiene standards and therefore tend to have stricter views on hygiene. However, there is little systematic research on sex differences in hygiene norms at the global scale. We set up two hypotheses: (1) Stricter hygiene norms among women than among men is a global phenomenon. (2) The size of this sex difference varies across nations with the level of sex equality. We examine these hypotheses using data from a recent international survey (N = 17,632). Participants in 56 countries were asked for their views of where it is not appropriate for people to spit and in which situations people should wash their hands. As a measure of sex equality, we use an existing country-level measure of attitudes to equality between the sexes, available for 49 nations in the study. Stricter hygiene norms among women than among men are observed almost everywhere, but there are a few exceptions (most notably Nigeria and Saudi Arabia). The size of the sex difference in hygiene norms varies strongly with the level of sex equality, but in a non-linear way. The sex difference is most pronounced in moderately egalitarian countries with the highest recorded difference being in Chile. In more egalitarian parts of the world, more sex equality is associated with a smaller sex difference in hygiene norms. In the less egalitarian parts of the world, the opposite relation holds. We offer an interpretation in terms of what different levels of sex equality mean for the content of sex roles.
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Affiliation(s)
- Kimmo Eriksson
- Institute for Futures Studies, Stockholm, Sweden
- Division of Mathematics and Physics, School of Education, Culture and Communication, Mälardalen University, Västerås, Sweden
- * E-mail:
| | - Thomas E. Dickins
- Department of Psychology, School of Science & Technology, Middlesex University, Hendon, London, United Kingdom
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11
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Zhao Q. Editorial: Mental health promotion and suicide prevention in a changing world. Front Psychiatry 2022; 13:1129979. [PMID: 36733414 PMCID: PMC9887279 DOI: 10.3389/fpsyt.2022.1129979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Qing Zhao
- CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China.,Department of Psychology, University of Chinese Academy of Sciences, Beijing, China
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12
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Kolesnyk D, de Jong MG, Pieters R. Gender Gaps in Deceptive Self-Presentation on Social-Media Platforms Vary With Gender Equality: A Multinational Investigation. Psychol Sci 2021; 32:1952-1964. [PMID: 34780313 DOI: 10.1177/09567976211016395] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Deceptive self-presentation on social-media platforms appears to be common. However, its prevalence and determinants are still largely unknown, partly because admitting such behavior is socially sensitive and hard to study. We investigated deceptive self-presentation from the perspective of mating theories in two key domains: physical attractiveness and personal achievement. A truth-telling technique was used to measure deceptive self-presentation in a survey of 12,257 adults (51% female) across 25 countries. As hypothesized, men and women reported more deceptive self-presentation in the domain traditionally most relevant for their gender in a mating context. However, contrary to lay beliefs (N = 790), results showed larger gender differences in deceptive self-presentation in countries with higher gender equality because there is less gender-atypical (relative to gender-typical) deceptive self-presentation in these countries. Higher gender equality was also associated with less deceptive self-presentation for men and women worldwide.
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Affiliation(s)
- Dasha Kolesnyk
- Department of Business Economics, Erasmus School of Economics, Erasmus University Rotterdam
| | - Martijn G de Jong
- Department of Business Economics, Erasmus School of Economics, Erasmus University Rotterdam
| | - Rik Pieters
- Department of Marketing, Tilburg School of Economics and Management, Tilburg University
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13
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MacEacheron M, Kohut T, Fisher WA. No Gender Differences in Enrollment for Replicated, Minimally-Different 'Pornographic' Versus 'Photographic' Studies. INTERNATIONAL JOURNAL OF SEXUAL HEALTH : OFFICIAL JOURNAL OF THE WORLD ASSOCIATION FOR SEXUAL HEALTH 2021; 34:130-143. [PMID: 38595682 PMCID: PMC10903555 DOI: 10.1080/19317611.2021.1944420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 04/26/2021] [Accepted: 06/09/2021] [Indexed: 04/11/2024]
Abstract
Objective: Since women tend to use pornography less, they may enroll less in studies concerning it and/or those who do may be gender-atypical. Methods: One study plus replication, assessed proportion of participants reporting being women, responding to each of two, minimally different (one including the word "pornographic") study advertisement versions, and their pornography use frequency, Erotophilia-Erotophobia, and Openness to Experience. Results: Proportion responding to each version did not differ. In one sample only, women responding to one version differed in Openness to Experience. Conclusions: Advertising to North American convenience samples using the word "pornographic", may produce neither self-selection out by, nor over-sampling of gender-atypical, women.
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Affiliation(s)
- Melanie MacEacheron
- School of Social and Behavioral Sciences, Arizona State University – West Campus, Glendale, AZ, USA
| | - Taylor Kohut
- Psychology Department, University of Western Ontario, London, Ontario, Canada
| | - William A. Fisher
- Psychology Department, University of Western Ontario, London, Ontario, Canada
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14
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Luoto S. Sexual Dimorphism in Language, and the Gender Shift Hypothesis of Homosexuality. Front Psychol 2021; 12:639887. [PMID: 34135808 PMCID: PMC8200855 DOI: 10.3389/fpsyg.2021.639887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/15/2021] [Indexed: 12/30/2022] Open
Abstract
Psychological sex differences have been studied scientifically for more than a century, yet linguists still debate about the existence, magnitude, and causes of such differences in language use. Advances in psychology and cognitive neuroscience have shown the importance of sex and sexual orientation for various psychobehavioural traits, but the extent to which such differences manifest in language use is largely unexplored. Using computerised text analysis (Linguistic Inquiry and Word Count: LIWC 2015), this study found substantial psycholinguistic sexual dimorphism in a large corpus of English-language novels (n = 304) by heterosexual authors. The psycholinguistic sex differences largely aligned with known psychological sex differences, such as empathising–systemising, people–things orientation, and men’s more pronounced spatial cognitive styles and abilities. Furthermore, consistent with predictions from cognitive neuroscience, novels (n = 158) by lesbian authors showed minor signs of psycholinguistic masculinisation, while novels (n = 167) by homosexual men had a female-typical psycholinguistic pattern, supporting the gender shift hypothesis of homosexuality. The findings on this large corpus of 66.9 million words indicate how psychological group differences based on sex and sexual orientation manifest in language use in two centuries of literary art.
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Affiliation(s)
- Severi Luoto
- English, Drama and Writing Studies, The University of Auckland, Auckland, New Zealand.,School of Psychology, The University of Auckland, Auckland, New Zealand
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15
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Furnham A, Treglown L. Sex differences in personality scores on six scales: Many significant, but mostly small, differences. CURRENT PSYCHOLOGY 2021. [DOI: 10.1007/s12144-021-01675-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
AbstractThis study examined sex differences in domain and facet scores from six personality tests in various large adult samples. The aim was to document differences in large adult groups which might contribute new data to this highly contentious area. We reported on sex differences on the Myers-Briggs Type Indicator (MBTI); the Five Factor NEO-PI-R; the Hogan Personality Indicator (HPI); the Motives and Values Preferences Indicator (MVPI); the Hogan Development Survey (HDS) and the High Potential Trait Indicator (HPTI). Using multivariate ANOVAs we found that whilst there were many significant differences on these scores, which replicated other studies, the Cohen’s d statistic showed very few (3 out of 130) differences >.50. Results from each test were compared and contrasted, particularly where they are measuring the same trait construct. Implications and limitations for researchers interested in assessment and selection are discussed.
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16
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Luoto S, Varella MAC. Pandemic Leadership: Sex Differences and Their Evolutionary-Developmental Origins. Front Psychol 2021; 12:633862. [PMID: 33815218 PMCID: PMC8015803 DOI: 10.3389/fpsyg.2021.633862] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/12/2021] [Indexed: 12/30/2022] Open
Abstract
The COVID-19 pandemic has caused a global societal, economic, and social upheaval unseen in living memory. There have been substantial cross-national differences in the kinds of policies implemented by political decision-makers to prevent the spread of the virus, to test the population, and to manage infected patients. Among other factors, these policies vary with politicians' sex: early findings indicate that, on average, female leaders seem more focused on minimizing direct human suffering caused by the SARS-CoV-2 virus, while male leaders implement riskier short-term decisions, possibly aiming to minimize economic disruptions. These sex differences are consistent with broader findings in psychology, reflecting women's stronger empathy, higher pathogen disgust, health concern, care-taking orientation, and dislike for the suffering of other people-as well as men's higher risk-taking, Machiavellianism, psychopathy, narcissism, and focus on financial indicators of success and status. This review article contextualizes sex differences in pandemic leadership in an evolutionary framework. Evolution by natural selection is the only known process in nature that organizes organisms into higher degrees of functional order, or counteracts the unavoidable disorder that would otherwise ensue, and is therefore essential for explaining the origins of human sex differences. Differential sexual selection and parental investment between males and females, together with the sexual differentiation of the mammalian brain, drive sex differences in cognition and behavioral dispositions, underlying men's and women's leadership styles and decision-making during a global pandemic. According to the sexually dimorphic leadership specialization hypothesis, general psychobehavioral sex differences have been exapted during human evolution to create sexually dimorphic leadership styles. They may be facultatively co-opted by societies and/or followers when facing different kinds of ecological and/or sociopolitical threats, such as disease outbreaks or intergroup aggression. Early evidence indicates that against the invisible viral foe that can bring nations to their knees, the strategic circumspection of empathic feminine health "worriers" may bring more effective and humanitarian outcomes than the devil-may-care incaution of masculine risk-taking "warriors".
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Affiliation(s)
- Severi Luoto
- English, Drama and Writing Studies, University of Auckland, Auckland, New Zealand
- School of Psychology, University of Auckland, Auckland, New Zealand
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17
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Stewart-Williams S, Halsey LG. Men, women and STEM: Why the differences and what should be done? EUROPEAN JOURNAL OF PERSONALITY 2021. [DOI: 10.1177/0890207020962326] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
It is a well-known and widely lamented fact that men outnumber women in a number of fields in STEM (science, technology, engineering and maths). The most commonly discussed explanations for the gender gaps are discrimination and socialization, and the most common policy prescriptions target those ostensible causes. However, a great deal of evidence in the behavioural sciences suggests that discrimination and socialization are only part of the story. The purpose of this paper is to highlight other aspects of the story: aspects that are commonly overlooked or downplayed. More precisely, the paper has two main aims. The first is to examine the evidence that factors other than workplace discrimination contribute to the gender gaps in STEM. These include relatively large average sex differences in career and lifestyle preferences, and relatively small average differences in cognitive aptitudes – some favouring males, others favouring females – which are associated with progressively larger differences the further above the average one looks. The second aim is to examine the evidence suggesting that these sex differences are not purely a product of social factors but also have a substantial biological (i.e. inherited) component. A more complete picture of the causes of the unequal sex ratios in STEM may productively inform policy discussions.
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Affiliation(s)
| | - Lewis G Halsey
- Department of Life Sciences, University of Roehampton, London, UK
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18
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Kaiser T, Del Giudice M, Booth T. Global sex differences in personality: Replication with an open online dataset. J Pers 2020; 88:415-429. [PMID: 31309560 PMCID: PMC7317516 DOI: 10.1111/jopy.12500] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/13/2019] [Accepted: 07/06/2019] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Sex differences in personality are a matter of continuing debate. In a study on the United States standardization sample of Cattell's 16PF (fifth edition), Del Giudice and colleagues (2012; PLoS ONE, 7, e29265) estimated global sex differences in personality with multigroup covariance and mean structure analysis. The study found a surprisingly large multivariate effect, D = 2.71. Here we replicated the original analysis with an open online dataset employing an equivalent version of the 16PF. METHOD We closely replicated the original MG-MCSA analysis on N = 21,567 U.S. participants (63% females, age 16-90); for robustness, we also analyzed N = 31,637 participants across English-speaking countries (61% females, age 16-90). RESULTS The size of global sex differences was D = 2.06 in the United States and D = 2.10 across English-speaking countries. Parcel-allocation variability analysis showed that results were robust to changes in parceling (U.S.: median D = 2.09, IQR [1.89, 2.37]; English-speaking countries: median D = 2.17, IQR [1.98, 2.47]). CONCLUSIONS Our results corroborate the original study (with a comparable if somewhat smaller effect size) and provide new information on the impact of parcel allocation. We discuss the implications of these and similar findings for the psychology of sex differences.
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Affiliation(s)
- Tim Kaiser
- Department of PsychologyUniversity of SalzburgSalzburgAustria
| | - Marco Del Giudice
- Department of PsychologyUniversity of New MexicoAlbuquerqueNew Mexico
| | - Tom Booth
- Department of PsychologyUniversity of EdinburghEdinburghUK
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19
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Richardson SS, Reiches MW, Bruch J, Boulicault M, Noll NE, Shattuck-Heidorn H. Is There a Gender-Equality Paradox in Science, Technology, Engineering, and Math (STEM)? Commentary on the Study by Stoet and Geary (2018). Psychol Sci 2020; 31:338-341. [PMID: 32043923 DOI: 10.1177/0956797619872762] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Sarah S Richardson
- Department of the History of Science, Harvard University.,Committee on Degrees in Studies of Women, Gender, and Sexuality, Harvard University
| | | | - Joe Bruch
- Department of Population Health Sciences, Harvard University
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20
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Endendijk JJ, van Baar AL, Deković M. He is a Stud, She is a Slut! A Meta-Analysis on the Continued Existence of Sexual Double Standards. PERSONALITY AND SOCIAL PSYCHOLOGY REVIEW 2019; 24:163-190. [PMID: 31880971 PMCID: PMC7153231 DOI: 10.1177/1088868319891310] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
(Hetero)sexual double standards (SDS) entail that different sexual behaviors are appropriate for men and women. This meta-analysis (k = 99; N = 123,343) tested predictions of evolutionary and biosocial theories regarding the existence of SDS in social cognitions. Databases were searched for studies examining attitudes or stereotypes regarding the sexual behaviors of men versus women. Studies assessing differences in evaluations, or expectations, of men’s and women’s sexual behavior yielded evidence for traditional SDS (d = 0.25). For men, frequent sexual activity was more expected, and evaluated more positively, than for women. Studies using Likert-type-scale questionnaires did not yield evidence of SDS (combined M = −0.09). Effects were moderated by level of gender equality in the country in which the study was conducted, SDS-operationalization (attitudes vs. stereotypes), questionnaire type, and sexual behavior type. Results are consistent with a hybrid model incorporating both evolutionary and sociocultural factors contributing to SDS.
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21
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Thomas AG, Jonason PK, Blackburn JD, Kennair LEO, Lowe R, Malouff J, Stewart-Williams S, Sulikowski D, Li NP. Mate preference priorities in the East and West: A cross-cultural test of the mate preference priority model. J Pers 2019; 88:606-620. [PMID: 31494937 DOI: 10.1111/jopy.12514] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/14/2019] [Accepted: 08/28/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Mate choice involves trading-off several preferences. Research on this process tends to examine mate preference prioritization in homogenous samples using a small number of traits and thus provide little insight into whether prioritization patterns reflect a universal human nature. This study examined whether prioritization patterns, and their accompanying sex differences, are consistent across Eastern and Western cultures. METHOD In the largest test of the mate preference priority model to date, we asked an international sample of participants (N = 2,477) to design an ideal long-term partner by allocating mate dollars to eight traits using three budgets. Unlike previous versions of the task, we included traits known to vary in importance by culture (e.g., religiosity and chastity). RESULTS Under low budget conditions, Eastern and Western participants differed in their mate dollar allocation for almost every trait (average d = 0.42), indicating that culture influences prioritization. Despite these differences, traits fundamental for the reproductive success of each sex in the ancestral environment were prioritized by both Eastern and Western participants. CONCLUSION The tendency to prioritize reproductively fundamental traits is present in both Eastern and Western cultures. The psychological mechanisms responsible for this process produce similar prioritization patterns despite cross-cultural variation.
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Affiliation(s)
| | - Peter K Jonason
- School of Psychology, Western Sydney University, Sydney, Australia
| | | | | | - Rob Lowe
- Department of Psychology, Swansea University, Swansea, UK
| | - John Malouff
- Department of Psychology, The University of New England, Armidale, New South Wales, Australia
| | | | - Danielle Sulikowski
- Perception and Performance Research Group, School of Psychology, Charles Sturt University, Bathurst, New South Wales, Australia
| | - Norman P Li
- School of Social Sciences, Singapore Management University, Singapore
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22
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Treger S, Schmitt DP. Independent, Autonomous, and Permissive: Examining the Links Between Self-Construal and Sexual Permissiveness. JOURNAL OF SEX RESEARCH 2019; 56:705-717. [PMID: 29746189 DOI: 10.1080/00224499.2018.1465884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Much of the research on sexual attitudes has focused on biological sex as a predictor variable. This work has consistently demonstrated that men are more permissive in attitudes toward casual sex than are women. Less is known, however, about how other individual difference variables may shape sexual attitudes. In this research, we considered whether self-construal (whether one believes that others are or are not part of their self-concept) influences people's attitudes toward casual sex. Specifically, we posited that an independent self-construal is positively related to, and an interdependent self-construal is negatively related to, sexual permissiveness. Two cross-sectional studies (ns = 517 and 212) yielded support for these hypotheses. We further considered autonomy as a potential process variable. A mediation analysis revealed that self-construal was related to autonomy, which in turn positively predicted sexual attitudes and drove this association. We integrate these findings into the literature on sexual attitudes and discuss theoretical insights derived from our findings.
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Affiliation(s)
| | - David P Schmitt
- b Centre for Culture and Evolution, Division of Psychology , Brunel University London
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23
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Tay PKC, Ting YY, Tan KY. Sex and Care: The Evolutionary Psychological Explanations for Sex Differences in Formal Care Occupations. Front Psychol 2019; 10:867. [PMID: 31057471 PMCID: PMC6478767 DOI: 10.3389/fpsyg.2019.00867] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 04/02/2019] [Indexed: 11/29/2022] Open
Abstract
Men and women exhibit clear differences in occupational choices. The present article elucidates sex differences in terms of formal care occupational choices and care styles based on evolutionary psychological perspectives. Broadly (1) the motivation to attain social status drives male preference for occupations that signals prestige and the desire to form interpersonal affiliation underlies female preference for occupations that involve psychosocial care for people in need; (2) ancestral sex roles leading to sexually differentiated cognitive and behavioral phenotypic profiles underlie present day sex differences in care styles where men are things-oriented, focusing on disease management while women are people-oriented, focusing on psychosocial management. The implications for healthcare and social care are discussed and recommendations for future studies are presented.
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Affiliation(s)
- Peter Kay Chai Tay
- Centre for Ageing Research and Education, Duke-NUS Medical School, Singapore, Singapore
| | - Yi Yuan Ting
- Centre for Ageing Research and Education, Duke-NUS Medical School, Singapore, Singapore
| | - Kok Yang Tan
- Centre for Ageing Research and Education, Duke-NUS Medical School, Singapore, Singapore.,Humanities and Social Sciences, Murdoch University, Singapore, Singapore
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24
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Groyecka A, Witzel C, Butovskaya M, Sorokowski P. Similarities in Color Preferences Between Women and Men: The Case of Hadza, the Hunter-Gatherers From Tanzania. Perception 2019; 48:428-436. [PMID: 30982405 DOI: 10.1177/0301006619840937] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Evidence for cross-cultural patterns of sexual differences in color preferences raised the question of whether these preferences are determined by universal principles. To address this question, we investigated most- and least-favorite color choices in a nonindustrialized community, the Hadza that has an egalitarian hunter-gatherer culture, fundamentally different from those previously investigated. We also compared color preference patterns in the Hadza with published data from Poland and Papua. Our results show that Hadza have very different color preferences than Polish and Papuan Yali respondents. Unlike many industrialized and nonindustrialized cultures, Hadza color preferences are practically the same for women and men. These observations question the idea of universal differences of color preferences between sexes and raise important questions about the determinants of color preferences.
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Affiliation(s)
| | - Christoph Witzel
- Departament of Psychology, Justus-Liebig-Universität, Giessen, Germany
| | - Marina Butovskaya
- Institute of Ethnology and Anthropology, Russian Academy of Science, Moscow, Russia; National Research University Higher School of Economics, Moscow, Russia
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25
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Zhao Q, Neumann DL, Cao Y, Baron-Cohen S, Yan C, Chan RCK, Shum DHK. Culture-Sex Interaction and the Self-Report Empathy in Australians and Mainland Chinese. Front Psychol 2019; 10:396. [PMID: 30914986 PMCID: PMC6422933 DOI: 10.3389/fpsyg.2019.00396] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 02/08/2019] [Indexed: 11/13/2022] Open
Abstract
Empathy is the ability to understand and share other people's emotions. Researchers have debated whether Westerners and Asians differ in their self-report empathy. This study aimed to replicate a previously reported culture-sex interaction in self-report empathy using Australian and Mainland Chinese participants, to investigate the cultural differences in self-report empathy in each sex group, and to verify the moderated mediating effects of three empathy-related traits (i.e., independent self-construal, interdependent self-construal, and personal distress) on the cultural differences in self-report empathy in both sex groups. In this study, scores on two self-report questionnaires of empathy, namely, the Empathy Quotient (EQ) and the Interpersonal Reactivity Index (IRI), were compared between 196 Australian Caucasian (101 males) and 211 Mainland Chinese (59 males) university students. Results first confirmed the significant culture-sex interaction and illustrated that the cultural differences in empathy scores were significant only for female (i.e., Australian females had higher scores than Mainland Chinese females) but not for male participants. Furthermore, results of moderated mediation analyses indicated that higher self-report empathy in both females and males was related to higher interdependent self-construal (exhibited by Mainland Chinese) and less personal distress (exhibited by Australians), and particularly in females, also related to higher independent self-construal (exhibited by Australian females). The current study is one of few studies that suggest cultural differences in empathy are dependent on the sex of the participant. Moreover, the current findings have added new insights into the explanation of cultural differences in empathy using personal distress and self-construal.
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Affiliation(s)
- Qing Zhao
- School of Applied Psychology, Menzies Health Institute Queensland, Griffith University, Brisbane, QLD, Australia
| | - David L. Neumann
- School of Applied Psychology, Griffith University, Gold Coast, QLD, Australia
| | - Yuan Cao
- School of Psychology, The University of Queensland, Brisbane, QLD, Australia
| | - Simon Baron-Cohen
- Autism Research Centre, Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Chao Yan
- Ministry of Education, East China Normal University, Shanghai, China
| | - Raymond C. K. Chan
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
| | - David H. K. Shum
- School of Applied Psychology, Griffith University, Gold Coast, QLD, Australia
- Neuropsychology and Applied Cognitive Neuroscience Laboratory, CAS Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
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26
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Wade TJ, Mogilski J. Emotional Accessibility Is More Important Than Sexual Accessibility in Evaluating Romantic Relationships - Especially for Women: A Conjoint Analysis. Front Psychol 2018; 9:632. [PMID: 29867628 PMCID: PMC5961442 DOI: 10.3389/fpsyg.2018.00632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 04/16/2018] [Indexed: 11/30/2022] Open
Abstract
Prior research examining mate expulsion indicates that women are more likely to expel a mate due to deficits in emotional access while men are more likely to expel a mate due to deficits in sexual access. Prior research highlights the importance of accounting for measurement limitations (e.g., the use of incremental vs. forced-choice measures) when assessing attitudes toward sexual and emotional infidelity, Sagarin et al., 2012, Wade and Brown, 2012). The present research uses conjoint analysis, a novel methodology for controlling several limitations of using continuous self-report measures in mate expulsion research. Participants (N = 181, 128 women) recruited from Bucknell University and several psychology recruitment listservs in the United States rated nine profiles that varied in three potential levels of emotional and sexual accessibility. Men were more likely to want to break up with a partner due to sexual accessibility deficits, whereas women were more likely to want to break up due to emotional accessibility deficits. However, regardless of sex, emotional inaccessibility was more likely to produce mate expulsion. These findings are consistent with prior theory and highlight the need to disentangle emotional accessibility into its constituent in-pair benefits. This research also illustrates the utility of conjoint analysis as a statistical tool for studying how humans resolve trade-offs among competing outcomes during romantic decision-making.
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Affiliation(s)
- T J Wade
- Psychology, Bucknell University, Lewisburg, PA, United States
| | - Justin Mogilski
- Psychology, Oakland University, Rochester, MI, United States
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27
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Stoet G, Geary DC. The Gender-Equality Paradox in Science, Technology, Engineering, and Mathematics Education. Psychol Sci 2018; 29:581-593. [DOI: 10.1177/0956797617741719] [Citation(s) in RCA: 414] [Impact Index Per Article: 69.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The underrepresentation of girls and women in science, technology, engineering, and mathematics (STEM) fields is a continual concern for social scientists and policymakers. Using an international database on adolescent achievement in science, mathematics, and reading ( N = 472,242), we showed that girls performed similarly to or better than boys in science in two of every three countries, and in nearly all countries, more girls appeared capable of college-level STEM study than had enrolled. Paradoxically, the sex differences in the magnitude of relative academic strengths and pursuit of STEM degrees rose with increases in national gender equality. The gap between boys’ science achievement and girls’ reading achievement relative to their mean academic performance was near universal. These sex differences in academic strengths and attitudes toward science correlated with the STEM graduation gap. A mediation analysis suggested that life-quality pressures in less gender-equal countries promote girls’ and women’s engagement with STEM subjects.
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Affiliation(s)
| | - David C. Geary
- Department of Psychological Sciences, University of Missouri
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28
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Reeves A, Stuckler D. Suicidality, Economic Shocks, and Egalitarian Gender Norms. EUROPEAN SOCIOLOGICAL REVIEW 2016; 32:39-53. [PMID: 26877572 PMCID: PMC4750292 DOI: 10.1093/esr/jcv084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Durkheim conceived of suicide as a product of social integration and regulation. Although the sociology of suicide has focused on the role of disintegration, to our knowledge, the interaction between integration and regulation has yet to be empirically evaluated. In this article we test whether more egalitarian gender norms, an important form of macro-regulation, protects men and women against suicidality during economic shocks. Using cross-national data covering 20 European Union countries from the years 1991 to 2011, including the recent economic crises in Europe, we first assessed the relation between unemployment and suicide. Then we evaluated potential effect modification using three measures of gender equality, the gender ratio in labour force participation, the gender pay gap, and women's representation in parliament using multiple measures. We found no evidence of a significant, direct link between greater gender equality and suicide rates in either men or women. However, a greater degree of gender equality helped protect against suicidality associated with economic shocks. At relatively high levels of gender equality in Europe, such as those seen in Sweden and Austria, the relationship between rising unemployment rates and suicide in men disappeared altogether. Our findings suggest that more egalitarian forms of gender regulation may help buffer the suicidal consequences of economic shocks, especially in men.
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Affiliation(s)
- Aaron Reeves
- Department of Sociology, University of Oxford, Oxford, OX1 3UQ, UK
| | - David Stuckler
- Department of Sociology, University of Oxford, Oxford, OX1 3UQ, UK
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29
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Moss JH, Maner JK. Biased Sex Ratios Influence Fundamental Aspects of Human Mating. PERSONALITY AND SOCIAL PSYCHOLOGY BULLETIN 2015; 42:72-80. [PMID: 26498976 DOI: 10.1177/0146167215612744] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 09/28/2015] [Indexed: 11/17/2022]
Abstract
The operational sex ratio-the ratio of men to women in a given population-affects a range of social processes. The current research demonstrates that biased sex ratios (greater numbers of one sex than the other) influence fundamental aspects of people's mating strategy. When the sex ratio was favorable (one's own sex was in the minority), both sexes adopted strong sex-typical sociosexual orientations (relatively restricted for women; relatively unrestricted for men). When the sex ratio was unfavorable (one's own sex was in the majority), both sexes shifted toward the orientation typically favored by the other sex: Women became more unrestricted and men became more restricted (Experiment 1). When the sex ratio was unfavorable (relative to favorable), participants also displayed greater aggression toward a romantically desirable (but not undesirable) same-sex partner (Experiment 2). Exploratory analyses suggested that the sex ratio effect was present for unprovoked aggression but not provoked aggression (given the exploratory nature of that analysis, the aggression effect should be considered with some caution). Findings suggest that people's mating strategies are adaptively calibrated to contingencies within the local mating ecology.
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