Abstract
Income inequality has been empirically linked to interpersonal competition and risk-taking behaviors, but a separate line of findings consistently shows that individuals have inaccurate perceptions of the actual levels of income inequality in society. How can inequality be both consistently misperceived and yet a reliable predictor of behavior? The present study extends both these lines of research by evaluating if the scope of input used to assess income inequality (i.e., at the national, state, county, or postal code level) can account for perception discrepancies and if actual/perceived inequality is associated with female intrasexual competition. Female participants recruited online from the general US population (n = 691) provided demographic information, measures of perceived income inequality, and measures of intrasexual competition attitudes and behavior. Actual and perceived income inequality (at any level) did not predict negative attitudes toward other women or female weighting of physical appearance as a desirable trait. Perceived income inequality and actual county-level inequality was, however, predictive of female competition in the form of self-sexualization clothing choice. Further analyses found that age and importance placed on physical attractiveness also predicted women’s clothing choices. Perceptions of income inequality were predicted not by actual Gini indices, but by beliefs about the levels of poverty and income gaps. These results highlight the importance of better understanding the proximate cues by which people perceive environmental features such as inequality, and how those cues are used to adjust interpersonal behaviors.
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The data and R code for analyses are available at https://osf.io/ku4ha/.
References
Albert, G., Richardson, G. B., Arnocky, S., Bird, B. M., Fisher, M., Hlay, J. K., & Hodges-Simeon, C. R. (2022). A psychometric evaluation of the intrasexual competition scale. Archives of Sexual Behavior, 51, 2741–2758. https://doi.org/10.1007/s10508-021-02167-6
Arnocky, S., Ribout, A., Mirza, R. S., & Knack, J. M. (2014). Perceived mate availability influences intrasexual competition, jealousy and mate-guarding behavior. Journal of Evolutionary Psychology, 12(1), 45–64. https://doi.org/10.1556/JEP.12.2014.1.3
Bishaw, A., & Posey, K. G. (2016). A comparison of rural and urban America: Household income and poverty. United States Census Bureau. Retrieved on 19 April 2023 from https://www.census.gov/newsroom/blogs/random-samplings/2016/12/a_comparison_of_rura.html
Blake, K. R., & Brooks, R. C. (2019a). Status anxiety mediates the positive relationship between income inequality and sexualization. Proceedings of the National Academy of Sciences, 116(50), 25029–25033. https://doi.org/10.1073/pnas.1909806116
Blake, K. R., & Brooks, R. C. (2019b). Income inequality and reproductive competition: Implications for consumption, status-seeking, and women’s self-sexualization. In J. Jetten & K. Peters (Eds.), The social psychology of inequality (pp. 173–185). Springer. https://doi.org/10.1007/978-3-030-28856-3_11
Blake, K. R., Bastian, B., Denson, T. F., & Brooks, R. C. (2018). Income inequality not gender inequality positively covaries with female sexualization on social media. Proceedings of the National Academy of Sciences, 115(35), 8722–8727. https://doi.org/10.1073/pnas.1717959115
Blesch, K., Hauser, O. P., & Jachimowicz, J. M. (2022). Measuring inequality beyond the Gini coefficient may clarify conflicting findings. Nature Human Behaviour, 6, 1525–1536. https://doi.org/10.1038/s41562-022-01430-7
Borgerhoff Mulder, M. (2018). Economic inequality drives female sexualization. Proceedings of the National Academy of Sciences, 115(35), 8658–8660. https://doi.org/10.1073/pnas.1812331115
Buss, D. M. (1988). The evolution of human intrasexual competition: Tactics of mate attraction. Journal of Personality and Social Psychology, 54(4), 616–628. https://doi.org/10.1037/0022-3514.54.4.616
Buss, D. M., & Dedden, L. A. (1990). Derogation of competitors. Journal of Social and Personal Relationships, 7(3), 395–422. https://doi.org/10.1177/0265407590073006
Buunk, A. P., & Fisher, M. (2009). Individual differences in intrasexual competition. Journal of Evolutionary Psychology, 7(1), 37–48. https://doi.org/10.1556/JEP.7.2009.1.5
Campbell, A. (1999). Staying alive: Evolution, culture, and women’s intrasexual aggression. Behavioral and Brain Sciences, 22(2), 203–214. https://doi.org/10.1017/S0140525X99001818
Cingano, F. (2014). Trends in income inequality and its impact on economic growth. OECD Social Employment and Migration Working Papers, 163. https://doi.org/10.1787/5jxrjncwxv6j-en
Davis, A. C., & Arnocky, S. (2022). An evolutionary perspective on appearance enhancement behavior. Archives of Sexual Behavior, 51(1), 3–37. https://doi.org/10.1007/s10508-020-01745-4
Fagerlin, A., Zikmund-Fisher, B. J., Ubel, P., Jankovic, A., Derry, H. A., & Smith, D. M. (2007). Measuring numeracy without a math test: Development of the subjective numeracy scale. Medical Decision Making, 27(5), 672–680. https://doi.org/10.1177/0272989X07304449
Fisher, M. L., & Cox, A. (2009). The influence of female attractiveness on competitor derogation. Journal of Evolutionary Psychology, 7, 141–155. https://doi.org/10.1556/JEP.7.2009.2.3
Fisher, M., & Krems, J. A. (2023). An evolutionary review of female intrasexual competition. In D. Buss (Ed.), The Oxford handbook of human mating. Oxford University Press.
Fletcher, G. J. O., Tither, J. M., O’Loughlin, C., Friesen, M., & Overall, N. (2004). Warm and homely or cold and beautiful? Sex differences in trading off traits in mate selection. Personality and Social Psychology Bulletin, 30(6), 659–672. https://doi.org/10.1177/0146167203262847
Furman, E., Kye, Y., & Su, J. (2019). Computing the Gini index: A note. Economics Letters, 185. https://doi.org/10.1016/j.econlet.2019.108753
Gimpelson, V., & Treisman, D. (2017). Misperceiving inequality. Economics and Politics, 30(1), 27–54. https://doi.org/10.1111/ecpo.12103
Griskevicius, V., Tybur, J. M., Gangestad, S. W., Perea, E. F., Shapiro, J. R., & Kenrick, D. T. (2009). Aggress to impress: Hostility as an evolved context-dependent strategy. Journal of Personality and Social Psychology, 96(5), 980–994. https://doi.org/10.1037/a0013907
Hauser, O. P., & Norton, M. I. (2017). (Mis)perceptions of inequality. Current Opinion in Psychology, 18, 21–25. https://doi.org/10.1016/j.copsyc.2017.07.024
Hollands, G. J., Marteau, T. M., & Fletcher, P. C. (2016). Non-conscious processes in changing health-related behaviour: A conceptual analysis and framework. Health Psychology Review, 10(4), 381–394. https://doi.org/10.1080/17437199.2015.1138093
Hopcroft, R. L. (2006). High income men have high value as long-term mates in the U.S.: Personal income and the probability of marriage, divorce, and childbearing in the U.S. Evolution and Human Behavior, 42, 409–417. https://doi.org/10.1016/j.evolhumbehav.2005.07.004
Hopcroft, R. L. (2021). Sex, status, and reproductive success in the contemporary United States. Evolution and Human Behavior, 27(2), 104–120. https://doi.org/10.1016/j.evolhumbehav.2021.03.004
ISSP Research Group (2017). International Social Survey Programme: Social Inequality IV - ISSP 2009. GESIS Data Archive, Cologne. ZA5400 Data file Version 4.0.0. https://doi.org/10.4232/1.12777
Karimi-Malekabadi, F., Ghanbarian, E., Afhami, R., & Chegeni, R. (2019). Theory-driven assessment of intrasexual rivalry. Evolutionary Psychological Science, 5, 286–293. https://doi.org/10.1007/s40806-018-00185-7
Keys, E., & Bhogal, M. S. (2016). Mean girls: Provocative clothing leads to intra-sexual competition between females. Current Psychology, 37, 543–551. https://doi.org/10.1007/s12144-016-9536-x
Krems, J. A., Bradshaw, H., & Merrie, L. (2022). Intrasexual aggression. In J. Mogliski & T. Shackelford (Eds.), The Oxford handbook of evolutionary psychology and romantic relationships. Oxford University Press.
Krupp, D. B., & Cook, T. R. (2018). Local competition amplifies the corrosive effects of inequality. Psychological Science, 29(5), 824–833. https://doi.org/10.1177/0956797617748419
Litman, L., Robinson, J., & Abberbock, T. (2017). TurkPrime.com: A versatile crowdsourcing data acquisition platform for the behavioral sciences. Behavior Research Methods, 42(2), 433–442. https://doi.org/10.3758/s13428-016-0727-z
Luberti, F. R., Blake, K. R., & Brooks, R. C. (2020). The effects of the mating market, sex, age, and income on sociopolitical orientation: Insights from evolutionary theory and sexual economics theory. Human Nature, 31, 88–111. https://doi.org/10.1007/s12110-019-09361-5
Nettle, D., & Pollet, T. V. (2008). Natural selection on male wealth in humans. The American Naturalist, 172(5), 658–666. https://doi.org/10.1086/591690
Norton, M. I., & Ariely, D. (2011). Building a better America – one wealth quintile at a time. Perspectives on Psychological Science, 6(1), 9–12. https://doi.org/10.1177/1745691610393524
Olson, E., Doss, E. R., & Perilloux, C. (2020). Friend or foe? Mate presence and rival type influence clothing-based female intrasexual competition. Evolutionary Psychological Science, 7, 1–10. https://doi.org/10.1007/s40806-020-00260-y
Reynolds, T. A. (2022). Our grandmothers’ legacy: Challenges faced by female ancestors leave traces in modern women’s same-sex relationships. Archives of Sexual Behavior, 51(7), 3225–3256. https://doi.org/10.1007/s10508-020-01768-x
Schmalor, A., & Heine, S. J. (2022). The construct of subjective economic inequality. Social Psychological and Personality Science, 13(1), 210–219. https://doi.org/10.1177/1948550621996867
Vaillancourt, T. (2013). Do human females use indirect aggression as an intrasexual competition strategy? Philosophical Transactions of the Royal Society B: Biological Sciences, 368, 20130080. https://doi.org/10.1098/rstb.2013.0080
Vaillancourt, T., & Sharma, A. (2011). Intolerance of sexy peers: Intrasexual competition among women. Aggressive Behavior, 37(6), 569–577. https://doi.org/10.1002/ab.20413
Voland, E. (1990). Differential reproductive success within the Krummhörn population (Germany, 18th and 19th centuries). Behavioral Ecology and Sociobiology, 26, 65–72. https://doi.org/10.1007/BF00174026
Wang, X., Chen, H., Chen, Z., & Yang, Y. (2021). Women’s intrasexual competition results in beautification. Social Psychological and Personality Science, 12(5), 648–657. https://doi.org/10.1177/1948550620933403
Weeden, J., Abrams, M. J., Green, M. C., & Sabini, J. (2006). Do high-status people really have fewer children? Education, income, and fertility in the contemporary U.S. Human Nature, 17(4), 377–392. https://doi.org/10.1007/s12110-006-1001-3
Willis, G. B., García-Sánchez, E., Sánchez-Rodríguez, Á., García-Castro, J. D., & Rodríguez-Bailón, R. (2022). The psychosocial effects of economic inequality depend on its perception. Nature Reviews Psychology, 1, 301–309. https://doi.org/10.1038/s44159-022-00044-0
World Population Review (2022). Income inequality by state 2022. https://worldpopulationreview.com/state-rankings/income-inequality-by-state. Accessed 25 Jan 2023
World Bank. (2022). Gini index. https://data.worldbank.org/indicator/SI.POV.GINI?most_recent_value_desc=false. Accessed 25 Jan 2023
Acknowledgements
This research was supported by a Doreen Shanteau undergraduate research fellowship to AMR, from the Department of Psychological Sciences, Kansas State University.
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Ruder, A.M., Brase, G.L., Balboa, N.J. et al. Perceptions of Income Inequality and Women’s Intrasexual Competition. Hum Nat 34, 605–620 (2023). https://doi.org/10.1007/s12110-023-09466-y
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DOI: https://doi.org/10.1007/s12110-023-09466-y