La atracción de sexos es hormonal

Las mujeres con niveles sanguíneos de testosterona elevados sienten mayor atracción por varones de aspecto masculino según un estudio de la Universidad de Aberdeen. A los varones les ocurre algo parecido: con niveles elevados de la misma hormona, se sienten atraidos por mujeres de aspecto muy femenino.

El estudio se basó en la selección de fotografías según el grado de atracción que sentían los estrudiados, a los que, además, se le midió la cantidad de testosterona.

Welling LL, Jones BC, Debruine LM, Smith FG, Feinberg DR, Little AC, Al-Dujaili EA. Men report stronger attraction to femininity in women's faces when their testosterone levels are high. Horm Behav. 2008 Aug 7. [Epub ahead of print]

Face Research Laboratory, School of Psychology, University of Aberdeen, UK.

Many studies have shown that women's judgments of men's attractiveness are affected by changes in levels of sex hormones. However, no studies have tested for associations between changes in levels of sex hormones and men's judgments of women's attractiveness. To investigate this issue, we compared men's attractiveness judgments of feminized and masculinized women's and men's faces in test sessions where salivary testosterone was high and test sessions where salivary testosterone was relatively low. Men reported stronger attraction to femininity in women's faces in test sessions where salivary testosterone was high than in test sessions where salivary testosterone was low. This effect was found to be specific to judgments of opposite-sex faces. The strength of men's reported attraction to femininity in men's faces did not differ between high and low testosterone test sessions, suggesting that the effect of testosterone that we observed for judgments of women's faces was not due to a general response bias. Collectively, these findings suggest that changes in testosterone levels contribute to the strength of men's reported attraction to femininity in women's faces and complement previous findings showing that testosterone modulates men's interest in sexual stimuli.

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