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How does religion motivate cooperation? How do the factors (genetic and cultural) that cause these motivations variously evolve, and why are they conserved? Cooperative-signalling theories of religion answer these questions by generalising from well-supported principles and research in the life sciences. Cooperative-signalling theories are interesting because they explain existing puzzles in the data about religions, and lead to testable hypotheses. This article discusses how signalling theory has been applied to explain the evolution and conservation of religiously motivated cooperation at small and large social scales, and reviews evidence relevant to evaluating these applications.
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Bulbulia et al. (2011) studied this question.
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