Robin R. Vallacher, Ph.D., is Professor of Psychology at Florida Atlantic University, USA, and Research Associate at the Center for Complex Systems, University of Warsaw, Poland. He has authored or edited 11 professional books and written over 150 book chapters and journal articles. In recent years, Dr. Vallacher and his colleagues have adapted principles and methods from complexity science and nonlinear dynamical systems to investigate a wide range of topics in personality and social psychology, including self-concept, self-regulation, mindfulness, social judgment, social influence, close relationships, stereotyping and prejudice, sport psychology, social change, intergroup conflict, and the ascendance of populist movements in the U.S. and Europe. Peter M. Gollwitzer, Ph.D., is Professor of Psychology at New York University, USA, and affiliated with the Zeppelin University Friedrichhafen and the University of Konstanz, Germany. He has authored or edited ten professional books and published over 300 book chapters and journal articles. His research investigates a wide range of topics in social psychology and motivation science with a focus on self-concepts and aspired-to identities, self-regulation of goal pursuit, and the down-regulation of negative emotions such as envy, anger, fear, disgust, and sadness.
