E-Mail IMAGE: Illustration of male members of the Bolivian Tsimané. In their study, the researchers describe which conflicts may arise between men in this small-scale society and who supports who in case... view more Credit: Daniel Redhead Daniel Redhead, from the Max Planck Institute for Evolutionary Anthropology, and Chris von Rueden, from the University of Richmond, published a new study that describes coalition formation among men in Tsimané Amerindians living in Amazonian Bolivia, over a period of eight years. In two Tsimané communities, the authors describe the inter-pers...