Sometime within the past year, nearly 4,800 women participated in an experiment at Faceresearch.org, the online psychology laboratory of the Face Research Laboratory at the University of Aberdeen in Scotland. They were young women, mostly in their early- to mid-twenties, and all identified their ethnicity as white. Later, researchers at the lab would confirm from IP address data that the participants came from 30 countries including Argentina, Sweden, Russia, Australia and the United States. The women’s country of origin was an important part of the experiment. […] After crunching the data—including the women’s […] preferences, their country of origin and that country’s national health index—the Face Lab researchers proved something remarkable. They could predict how masculine a woman likes her men based on her nation’s World Health Organization statistics for mortality rates, life expectancy and the impact of communicable disease. In countries where poor health is particularly a threat to survival, women leaned toward “manlier” men. That is, they preferred their males to have shorter, broader faces and stronger eyebrows, cheekbones and jaw lines. The researchers went on to publish the study in this month’s issue of the scientific journal Proceedings of the Royal Society: Biological Sciences.