Infant colic: Re-evaluating the adaptive hypotheses

Behavioral and Brain Sciences 27 (4):468-469 (2004)
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Colic may allow infants to obtain additional investment from their parents. The lack of clear fitness costs of colic and of differences in condition between colicky and non-colicky infants is inconsistent with the hypotheses that colic is an honest signal of need or vigor. These and other characteristics of colic, however, are consistent with the hypothesis that colic is a manipulative signal.



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