Psychological aspects of adaptations for kin directed altruistic helping behaviors

Daniel J. Kruger1
1Loyola University Chicago, United States
Cite this article:  Kruger, D. (2001). Psychological aspects of adaptations for kin directed altruistic helping behaviors. Social Behavior and Personality: An international journal, 29, 323-330.

Volume 29 Issue 4 | e1095 | Published: June 2001 | DOI: https://doi.org/10.2224/sbp.2001.29.4.323

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In this questionnaire study light is shed on the psychological component of kin-selecting tendencies
predicted by Hamilton’s (1964b) inclusive fitness theory of discriminatory altruistic behavior based on genetic similarity. Participants rated donations of assistance aiding survival and material wealth as more rational and ethical when these actions were performed for closer relatives. Participants also felt a greater obligation to perform these acts for a close relation. A comparison condition where assistance was unlikely to affect survival or reproductive success did not exhibit these tendencies.


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