Why reciprocal altruism is not a kind of group selection

Biology and Philosophy 26 (3):385-400 (2011)
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Reciprocal altruism was originally formulated in terms of individual selection and most theorists continue to view it in this way. However, this interpretation of reciprocal altruism has been challenged by Sober and Wilson (1998). They argue that reciprocal altruism (as well as all other forms of altruism) evolves by the process of group selection. In this paper, we argue that the original interpretation of reciprocal altruism is the correct one. We accomplish this by arguing that if fitness attaches to (at minimum) entire life cycles, then the kind of fitness exchanges needed to form the group-level in such situations is not available. Reciprocal altruism is thus a result of individual selection and when it evolves, it does so because it is individually advantageous



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Robert Brandon
Duke University

Citations of this work

Units and levels of selection.Elisabeth Lloyd - 2008 - Stanford Encyclopedia of Philosophy.
What are the ‘levels’ in levels of selection?Markus Ilkka Eronen & Grant Ramsey - forthcoming - British Journal for the Philosophy of Science.
Can altruism be unified?Grant Ramsey - 2016 - Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 56:32-38.

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