Steven Charles Hertler is a licensed examining psychologist and Adjunct Professor of Psychology at the College of Saint Elizabeth, USA.
Aurelio José Figueredo is Professor of Psychology, Family Studies and Human Development at the University of Arizona, USA. Dr. Figueredo also serves as Director of the Ethology and Evolutionary Psychology (EEP) Laboratory.
Mateo Peñaherrera-Aguirre currently serves as a research associate in the School of Animal and Comparative-Sciences Research at the University of Arizona, USA. His lines of scientific research include the evolution of lethal coalitional aggression in human and nonhuman animals, socioecological correlates of sociopolitical complexity, and multilevel selection.