Journal
EVOLUTION AND HUMAN BEHAVIOR
Volume 28, Issue 4, Pages 234-247Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.evolhumbehav.2007.02.007
Keywords
cooperation; costly signaling theory; ritual; religion; warfare
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While males in many societies endure traumatic and painful rites, in other societies male rites are mild or completely absent. To explain these cross-cultural differences, we use data collected from the Human Relations Area Files electronic databases (eHRAF) to test two sets of hypotheses derived from signaling theory. If costly male rites serve to signal mate quality, they would be expected to correlate with the intensity of mating competition. If they serve to signal group commitments, they would be expected to be associated with the importance of overcoming problems of collective action. Our results support the latter set of hypotheses: males in societies that engage in warfare endure the costliest rites. Moreover, we show that whether wars are fought within cultural groups or against other cultural groups is an important determinant of whether or not male rites result in permanent visible marks, such as ritual scars. We argue that costly male rites signal commitment and promote solidarity among males who must organize for warfare. (C) 2007 Elsevier Inc. All rights reserved.
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