This book addresses how and why criminal offenders repeat their actions after being released from prison. It is part of an attempt to explain criminal behavior within the context of a contemporary psychological understanding of behavior, rather than more traditional theories of crime. Over 300 male criminal repeat offenders were interviewed and tested. The results indicate that their new offenses may be the result of something like a breakdown. This report, written for a general audience, has important implications for release supervision, rehabilitation programs, and the prediction of recidivism.