Robert J. Sternberg is Professor of Human Development at Cornell University, USA and Honorary Professor of Psychology, University of Heidelberg, Germany. He has won the Grawemeyer Award in Psychology and the William James and James McKeen Cattell Awards from the APS.
Aleksandra KostiÄ is Professor of Social Psychology at the Faculty of Philosophy, Department of Psychology, University of NiÅĄ, Serbia. Her research interests include nonverbal communication, emotional experience, time perspective, ethnic identity, and similarities and differences between cultures in perception of category, intensity and antecedents of emotion.