A field of psychology that focuses on diagnosing and treating mental, emotional, and behavioral disorders. This includes understanding and applying psychological principles to assess, prevent, and alleviate symptoms of psychological distress and dysfunction. It integrates science, theory, and practice to understand and alleviate maladjustment, disability, and discomfort. It also promotes human adaptation, adjustment, and personal development. Clinical psychology encompasses a broad range of practices, including research, teaching, services for individuals, families, and groups, as well as development of prevention programs and public policy. It also studies the human growth and development across the lifespan. Further, it is a frequently discussed topic in psychology study guides and books.