Preeminent clinical child and adolescent psychological scientists offer an agenda for future research in this compendium of thought pieces. On a wide range of topics including ADHD, depression, self-injury, emotion regulation, conduct problems, addictions, clinical assessment and therapy, and many more, scientists review the current state of the literature and offer specific recommendations for what investigators next need to tackle to reduce mental illness among youth. Chapters include a discussion of theories and methods in clinical child and adolescent psychology, current funding priorities, and the intersection of traditional clinical psychology research with the burgeoning field of psychological neuroscience. This book is an essential resource for classes on clinical child and adolescent psychopathology and treatment. It also provides a unique guide for undergraduate and early graduate students who are determining how to start their research careers in the field. All of the chapters in this book were originally published as articles in the Journal of Clinical Child and Adolescent Psychology.