A forensic psychologist applies psychological principles to legal issues. May provide psychological and expert testimony in court regarding criminal forensic issues such as trial competency, waiver of Miranda Rights, criminal responsibility, death penalty mitigation, battered woman syndrome, domestic violence, drug dependence, and sexual disorders. One may help a judge decide which parent should have custody of a child, or evaluate other civil issues such as personal injury, employment discrimination, mental disability, product liability, and professional malpractice. May offer assessment, treatment and consultation with regard to individuals with a high risk of aggressive behavior, and may offer specialized treatment services to individuals involved in the legal system. Some forensic psychologists are trained in both psychology and the law. Most have a doctorate degree.