This sixth book in the Prevention Practice Kit provides an introduction to evidence-based prevention in psychology. Counselors, psychologists and mental health workers in schools, government agencies, community settings, and in private practice are increasingly expected to select evidence-based practices and programs, and to document the effectiveness of the care they provide. The book addresses the types of questions that may be most pertinent to counselors, psychologists, and other mental health workers who are engaged in prevention and interested in understanding evidence-based programs, including:The book introduces several definitions of evidence-based practice and the common components of these definitions. A broad overview of considerations for evaluating the quality and trustworthiness of prevention research is provided along with a discussion of common features of effective prevention programs. Guidance is provided on identifying evidence-based programs, including detailed descriptions of online registries of prevention programs. The book also provides recommendations for determining the need for a prevention program, selecting and implementing an appropriate program, and evaluating outcomes. Throughout the text, examples from research and practice are used to illustrate important concepts, and learning exercises at the end of each chapter augment comprehension and relevance.