Sex-biased lactational duration in a human population and its reproductive costs


We tested the proposition that among humans (1) differences in lactational duration result in differences in costs of reproduction even under rich nutritional conditions; and (2) elimination of factors postulated to favor male-biased parental care will be reflected in elimination or reversal of sex-biased care. To do so, we examined the relationship between… (More)
DOI: 10.1007/BF00172221


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