Jerry A. Hogan is Emeritus Professor of Psychology at the University of Toronto. A researcher of animal behavior for more than fifty years, his work focuses on understanding the structure, motivation and development of behavior, with tropical fish and jungle fowl as primary models. A past president of the International Society for Comparative Psychology (2002–2006), Hogan is also a co-author of Causal Mechanisms of Behavioural Development (Cambridge, 1994) and a leading contributor to Tinbergen's Legacy: Function and Mechanism in Behavioral Biology (Cambridge, 2009).