Sperm competition and female procurement of male resources : As explanations for a sex-specific time course in the sexual motivation of couples.

Abstract

This study investigates changes in sexual motivation over the duration of a partnership in a population sample stratified by age. The results replicate and extend the findings of a previous study that was based on a sample of college students. In the samples of 30- and 45-year-olds, male sexual motivation remains constant regardless of the duration of the… (More)
DOI: 10.1007/s12110-006-1010-2

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