Guido H.E. Gendolla is Professor of Psychology at the University of Geneva, Switzerland, where he holds the chair for motivation psychology and directs the Geneva Motivation Lab. He earned his diploma in psychology (corresponding to MA) and his PhD at the University of Bielefeld, Germany, and his habilitation in psychology at the University of Erlangen, Germany. Gendolla's research focuses on ... Read morehuman motivation and explicit and implicit affect and is mainly concerned with involved psychophysiological processes. Most of his recent research activity was centered on implicit influences in the self-regulation of effort. He has authored numerous publications and his research has been supported by various grants of the Deutsche Forschungsgemeinschaft and the Swiss National Funds. Mattie Tops is an Assistant Professor of Psychology at the VU University Amsterdam. He earned his diploma in psychology (corresponding to MA) at the Radboud University Nijmegen and his PhD at the University of Groningen, the Netherlands. He has published numerous articles and book chapters on the topics motivation and stress coping. Tops' research focuses on stress (coping) hormones and brain mechanisms of self-regulation. His research has been supported by grants from the Netherlands Organization of Scientific Research (NWO). Sander L. Koole is an Associate Professor of Psychology at the VU University Amsterdam. He has published many articles and book chapters on the topics emotion regulation and self-regulation. He has co-edited the Handbook of Experimental Existential Psychology and special issues in Social Cognition and Cognition and Emotion. His research has been supported by grants from the Netherlands Organization of Scientific Research (NWO) and the Templeton Foundation. He has been a residential fellow of the Center for Advanced Study in Behavioral Sciences at Stanford University. Koole's research was recognized in 2011 by a Consolidator Grant of the European Research Council, a grant that is awarded to researchers with the proven potential to become leaders in their field. Show Less