Eric A. Youngstrom, PhD, is Professor of Psychology and Neuroscience and Professor of Psychiatry at the University of North Carolina at Chapel Hill, where he is also Acting Director of the Center for Excellence in Research and Treatment of Bipolar Disorder. He was the inaugural recipient of the Early Career Award from the Society of Clinical Child and Adolescent Psychology of the American Psychological Association, and is an elected full member of the American College of Neuropsychopharmacology. Dr. Youngstrom has consulted on DSM-5 and ICD-11. He is past president of the Society for Clinical Child and Adolescent Psychology and currently chairs the Work Group on Child Diagnosis for the International Society for Bipolar Disorders.

Mitchell J. Prinstein, PhD, ABPP, is the John Van Seters Professor of Psychology and Neuroscience and Director of Clinical Psychology at the University of North Carolina at Chapel Hill. His research examines interpersonal models of internalizing symptoms and health-risk behaviors among adolescents, with a focus on the unique role of peer relationships in the developmental psychopathology of depression, self-injury, and suicidality. Dr. Prinstein is a past editor of the Journal of Clinical Child and Adolescent Psychology and a past president of the Society for a Science of Clinical Psychology and the Society for Clinical Child and Adolescent Psychology.

He is a recipient of awards including the Theodore Blau Early Career Award from the Society of Clinical Psychology of the American Psychological Association (APA), the Brickell Memorial Award for research on suicidality from Columbia University, the Mentor Award from the Association for Behavioral and Cognitive Therapies, the Beverly Thorn Award for Outstanding Service from the Council of University Directors of Clinical Psychology, and the Raymond D. Fowler Award for Outstanding Contribution to the Professional Development of Graduate Students from the American Psychological Association of Graduate Students.

Eric J. Mash, PhD, is Professor Emeritus of Psychology at the University of Calgary and Affiliate Professor in the Department of Psychiatry at Oregon Health and Science University. He is a Fellow of the Canadian Psychological Association and of the Society of Clinical Psychology, the Society for Child and Family Policy and Practice, the Society of Clinical Child and Adolescent Psychology, and the Society of Pediatric Psychology of the American Psychological Association. Dr. Mash is also a Fellow and Charter Member of the Association for Psychological Science. He has served as an editor, editorial board member, and editorial consultant for numerous journals and has published widely on child and adolescent psychopathology, assessment, and treatment.

Russell A. Barkley, PhD, ABPP, ABCN, is Clinical Professor of Psychiatry at the Virginia Commonwealth University School of Medicine. Dr. Barkley has worked with children, adolescents, and families since the 1970s and is the author of numerous bestselling books for both professionals and the public, including Taking Charge of ADHD and Your Defiant Child. He has also published six assessment scales and more than 280 scientific articles and book chapters on ADHD, executive functioning, and childhood defiance, and is editor of the newsletter The ADHD Report. A frequent conference presenter and speaker who is widely cited in the national media, Dr. Barkley is past president of the Section on Clinical Child Psychology (the former Division 12) of the American Psychological Association (APA), and of the International Society for Research in Child and Adolescent Psychopathology. He is a recipient of awards from the American Academy of Pediatrics and the APA, among other honors.