This is the definitive reference and text for both mental health and legal professionals. The authors offer a uniquely comprehensive discussion of the legal and clinical contexts of forensic assessment, along with best-practice guidelines for participating effectively and ethically in a wide range of criminal and civil proceedings. Presented are findings, instruments, and procedures related to criminal and civil competencies, civil commitment, sentencing, personal injury claims, antidiscrimination laws, child custody, juvenile justice, and more.