Synonyms
Definition
The evolution of the cognitive architecture humans use to sort themselves into coalitions of us versus them.
Introduction
Considerable attention across the social sciences has been paid to understanding how people categorize individuals into groups and create group identities. Throughout human history, conflict between groups was founded on categorizing relationships into “us” and “them” and social psychologists have long recognized the importance of group membership to human social organization. The “minimal group paradigm,” established as a method for investigating the minimal conditions required for discrimination to occur between groups, has continued to show that even virtually meaningless distinctions between groups, such as shirt color, can trigger a tendency to favor one’s own group over others. It is clear that the ability to readily distinguish between in-groups and out-groups played a key role in our evolutionary...
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References
Choi, J.-K., & Bowles, S. (2007). The coevolution of parochial altruism and war. Science, 318(5850), 636–640.
Gil-White, F. J. (2001). Are ethnic groups biological “species” to the human brain? Essentialism in our cognition of some social categories. Current Anthropology, 42(4), 515–553.
Hamilton, W. D. (1964). The genetical theory of kin selection. Journal of Theoretical Biology, 7, 1–52.
Hill, K. R., Walker, R. S., Bozicević, M., Eder, J., Headland, T., Hewlett, B., … Wood, B. (2011). Co-residence patterns in hunter-gatherer societies show unique human social structure. Science, 331(6022), 1286–1289.
Hirschfeld, L. A. (1998). Race in the making: Cognition, culture, and the child’s construction of human kinds. Cambridge, MA: MIT Press.
Lynch, R. (2010). It’s funny because we think it’s true: Laughter is augmented by implicit preferences. Evolution and Human Behavior: Official Journal of the Human Behavior and Evolution Society, 31(2), 141–148.
Lynch, R. F., & Trivers, R. L. (2012). Self-deception inhibits laughter. Personality and Individual Differences, 53(4), 491–495.
Lynch, R., Palestis, B. G., & Trivers, R. (2017). Religious devotion and extrinsic religiosity affect in-group altruism and out-group hostility oppositely in rural Jamaica. Evolutionary Psychological Science, 3(4), 335–344.
Swann, W. B., Buhrmester, M. D., Gómez, A., Jetten, J., Bastian, B., Vázquez, A., … Zhang, A. (2014). What makes a group worth dying for? Identity fusion fosters perception of familial ties, promoting self-sacrifice. Journal of Personality and Social Psychology, 106(6), 912–926.
Whitehouse, H. (2018). Dying for the group: Towards a general theory of extreme self-sacrifice. The Behavioral and Brain Sciences, 7, 1–64.
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Lynch, R. (2019). In-Group Versus Out-Group. In: Shackelford, T., Weekes-Shackelford, V. (eds) Encyclopedia of Evolutionary Psychological Science. Springer, Cham. https://doi.org/10.1007/978-3-319-16999-6_157-1
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DOI: https://doi.org/10.1007/978-3-319-16999-6_157-1
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