James A. Coan is an Assistant Professor of Psychology and the Neuroscience Graduate Program at the University of Virginia, in Charlottesville. His research focuses on the neural systems supporting emotional communication and regulation, with an emphasis on the roles these systems play in psychopathology and interpersonal relationships. John J. B. Allen is Distinguished Professor of Psychology, Cognitive Science, and Neuroscience at the University of Arizona, in Tucson. His research interests include the etiology and treatment of mood disorders.