The Psychology of Criminal Conduct, Sixth Edition, provides a psychological and evidence-informed perspective of criminal behavior that sets it apart from many criminological and mental health explanations of criminal behavior. Drawing upon the General Personality and Cognitive Social Learning theory, James Bonta and Donald Andrews provide an overview of the theoretical context and major knowledge base of the psychology of criminal conduct, discuss the eight major risk/need factors of criminal conduct, examine the prediction and classification of criminal behavior along with prevention and rehabilitation, and summarize the major issues in understanding criminal conduct. This book also offers the Risk/Need/Responsivity (RNR) model of offender assessment and treatment that has guided developments in the subject throughout the world. In this edition, the first since Andrews' death, Bonta carefully maintains the book's original contributions while presenting these core concepts succinctly, clearly, and elegantly. Appropriate for advanced undergraduates and graduate students as well as for scholars, researchers, and practitioners, The Psychology of Criminal Conduct, Sixth Edition, further extends and refines the authors' body of work.