Clinically oriented professionals and students need to understand and evaluate the research and statistics in professional articles, especially given today's emphasis on evidence-based practice. This book consists of updates of 33 previously published articles from the Journal of the American Academy of Child Adolescence/ Psychiatry, as well as an introduction and a conclusion on how to analyze and evaluate research articles. The book demonstrates how the research approach and design help determine the appropriate statis­ tical analysis. Short, independent, chapters that do not have to be read in order; A guide to understanding why a particular statistic was selected; An emphasis on effects sizes including measures of risk potency; Numerous cross-disciplinary examples to illustrate the material and Methods to help determine practical and clinical significance and their relation to meta-analysis and evidence-based practice. This book is intended for practitioners and students in psychology, education, counseling, mental and allied health, nursing, and medicine, and as a text for courses on understanding research methods and statistics. Exposure to research and statistics is assumed.