Health and Mental Health Treatment and Prevention

Groups the branches concerned with diagnosing, treating or preventing psychological and physical illness: Clinical Psychology and Counseling Psychology assess and treat mental health and adjustment problems generally, Abnormal Psychology studies the nature and causes of psychological disorder, Behavioral Psychology and Applied Behavior Analysis apply learning principles to change behavior therapeutically, Addiction Psychology treats substance use and behavioral addiction, Health Psychology and Behavioral Medicine study how psychological factors affect physical health and medical treatment, Pediatric Psychology and Psycho-Oncology apply that same health psychology to children's medical care and to cancer care respectively, Psychotraumatology studies the psychological effects of trauma, and Rehabilitation Psychology helps people adapt to disability and chronic illness. A branch centered on research method, workplace behavior or a social identity rather than treatment or prevention belongs elsewhere.