The aim of this book on psychotherapies with children and families is to present a comprehensive overview of the current array of intervention approaches in the child mental health field. There is a focus on the integration of theory, research, and practice throughout the book. The book proceeds from the more global pre­ sentations of basic theoretical approaches to applications of these approaches with specific problems and populations. It then presents more integrated intervention approaches and overviews of the research literature. One of the unique features of this book is its focus on future directions for each approach, both in clinical prac­ tice and in research. A second unique feature is its structured format across di­ verse approaches with a focus on empirical validation of approaches. Another innovation is the presentation of interventions that integrate major components of different theoretical approaches. Thus, the book reflects the current trends in the field of interventions with specific problems and populations, empirical valida­ tion of the approach, and the integration of treatment approaches. There are five major sections in this book. Part I consists of four chapters that address a variety of issues related to child psychotherapy. Chapter 1 by the editors examines the historical roots of child psychotherapy and explores current trends in the treatment of diverse child disorders. It emphasizes the movement to "treat­ ments that work" and sets the stage for the chapters that follow.