1. Instituto de Neuroetología, Universidad Veracruzana, Xalapa, Mexico
2. Psychology Department, School of Humanities and Social Sciences, Adam State University, Alamosa, CO, USA
3. Instituto de Investigaciones Sociológicas, Universidad Autónoma Benito Juárez de Oaxaca, Oaxaca, Mexico
4. Research Centre in Evolutionary Anthropology and Palaeoecology, Liverpool John Moores University, Liverpool, UK