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Eveningness is related to men's mating success

Author:
Randler, Christoph  Ebenhoeh, Nadine  Fischer, Arian  Hoechel, Sandra  Schroff, Christina  Stoll, Julia Christin  Vollmer, Christian  Piffer, Davide  


Journal:
PERSONALITY AND INDIVIDUAL DIFFERENCES


Issue Date:
2012


Abstract(summary):

Men and women differ in sleep duration and timing of sleeping. Men sleep shorter and are later chronotypes, thus go to bed and get up later than women. This sexual dimorphism in chronotype is most striking between the beginning of puberty and beginning of menopause indicating the possibility of a sexually selected trait. Sleep duration, however, is different between the sexes already before and after the reproductive phase, suggesting a trait that is not under sexual section. In men, the most influential predictor of mating success was extraversion, followed by age, propensity to stay out late and evening orientation. This was confirmed by structural equation modeling showing both, an indirect and a direct fitness benefit of eveningness even when imposing extraversion and age as important predictor variables. As eveningness is related to an array of problematic behaviors, we suggest that it can be viewed as a kind of handicap. (C) 2012 Elsevier Ltd. All rights reserved.


Page:
263---267


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