Paper published in Biology Letters: Cross-cultural analysis of women’s preferences for cues to hormones in the male face.

Our cross-cultural analysis of women’s preferences for cues to hormones in men’s faces is published today in Biology Letters. The study shows that women in societies with low scores on the Human Development Index (a measure of literacy, health care and economic stability) express stronger preferences for the faces of men with high levels of testosterone and the stress hormone cortisol. We argue that this is due to local ecological constraints which favour dominant men in tougher environments.  The paper can be viewed at: http://rsbl.royalsocietypublishing.org