Luca Tommasi is Associate Professor in the Department of Biomedical Science at the University of Chieti and a Fellow of the Konrad Lorenz Institute for Evolution and Cognition Research.

Mary A. Peterson is Professor in the Cognition and Neural Systems Program in the Department of Psychology and Research Social Scientist in the Cognitive Science Program at the University of Arizona.

Lynn Nadel is Regents' Professor in the Cognition and Neural Systems Program, Department of Psychology, at the University of Arizona.