Maider Perez de Villarreal is an Associate Professor at the Public University of Navarra (Pamplona, Navarra). She has a M.D. in Applied Ethology from the Autonomous University of Barcelona, and a Ph.D. in Molecular Biology from the University of Zaragoza. She has developed research in several areas from the experimental field (health, molecular biology, ethology, animal welfare and environmental education) in national and international research centers and universities. She has published several papers and book chapters and taken part in several national and international projects. Her current research interests move around Environmental Education, instruction and positive psychology applications.