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Reproductive status of mothers affects sex-biased parental investment in humans

AuthorsSan José, Cristina; Braza, Francisco ; Casanova, X.
Issue Date1997
PublisherAmmons Scientific
CitationPerceptual and Motor Skills 85: 917- 918 (1997)
AbstractAn analysis of the sexual differences in birth weights of 381 children showed that boys are heavier than girls for multiparous mothers but not for primiparous ones. The results support the current hypotheses that predict sex biases in parental investment, with higher costs of producing male offspring in some mammals. © Perceptual and Motor Skills 1997.
Identifiersdoi: 10.2466/pms.1997.85.3.917
issn: 0031-5125
Appears in Collections:(EBD) Artículos
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