Although the overarching goal of well-designed and well-executed rehabilitation programs is to use research to inform practice, that is not always the case in the criminal justice system. This chapter reviews the current state of assessment and treatment of violent offenders, sex offenders, perpetrators of intimate partner violence, juvenile offenders, female offenders, and offenders with serious mental illness and addresses how these affect risk management and community integration. (PsycINFO Database Record (c) 2019 APA, all rights reserved)