CL Apicella, DR Feinberg, FW Marlowe (2007) Voice pitch predicts reproductive success in male hunter-gatherers. Biology Letters, 3(6):682-684. PDF Times cited: 32
Abstract
The validity of evolutionary explanations of vocal sexual dimorphism hinges upon whether or not individuals with more sexually dimorphic voices have higher reproductive success than individuals with less dimorphic voices. However, due to modern birth control methods, these data are rarely described, and mating success is often used as a second-rate proxy. Here we test whether voice pitch predicts reproductive success, number of children bor n and child mortality in an evolutionarily relevant population of hunter-gatherers. While we find that voice pitch is not related to reproductive outcomes in women, we find that men with low voice pitch have higher reproductive success and more children born to them. However, voice pitch in men does not predict child mortality. These findi ngs suggest that the association between voice pitch and reproductive success in men is mediated by differential access to fecund women. Furthermore, they show that there is currently selection pressure for low-pitch voices in men.
O'Connor JJM, Feinberg DR, Fraccaro PJ, Borak DJ, Tigue CC, Re DE, Jones BC, Little AC, Tiddeman, BP. Female preferences for male vocal and facial masculinity in videos. Ethology.
Watkins CD, Jones BC, Little AC, DeBruine LM, Feinbeg DR. Cues to the sex ratio of the local population influence women's preferences for facial symmetry. Animal Behaviour.
Feinberg DR, DeBruine LM, Jones BC, LIttle AC, O'Connor JJM, Tigue CC. Women's self-perceived health and attractiveness predict their male vocal masculinity preferences in different directions across short- and long-term relationship contexts. Behavioral Ecology and Sociobiology.
O'Connor JJM & Feinberg DR. The influence of facial masculinity and voice pitch on jealousy and perceptions of intrasexual rivalry. Personality and Individual DIfferences (In Press).
MJ Law Smith, DK Deady, FR Moore, BC Jones, RE Cornwell, MR Stirrat, J Lawson, DR Feinberg & DI Perrett (in press). Maternal tendencies in women are associated with estrogen levels and facial femininity. Hormones and Behavior.