Jeremy W. Pettit, PhD, is professor of psychology and psychiatry at Florida International University. A licensed psychologist, his clinical research program focuses on the etiology and treatment of anxiety, depression, and suicidal behaviors. He has published more than 150 scholarly works on these topics and received multiple awards for his work, including the Edwin Shneidman Award from the American Association of Suicidology (AAS), and the Self-Help Book of Merit Award from the Association for Behavioral and Cognitive Therapies.Ryan M. Hill, PhD, is a psychologist and assistant professor of psychology at the University of Texas at San Antonio. He is a member of the AAS, and has published more than sixty scholarly works on suicide prevention and child and adolescent mental health.