What are the major theories in abnormal behavior?

The major theories of abnormal behavior include the biological, psychological, and sociocultural perspectives. The biological perspective attributes mental disorders to genetic, neurochemical, and physiological factors. The psychological perspective encompasses various frameworks, including psychoanalytic, cognitive-behavioral, and humanistic theories, which focus on internal processes, learned behaviors, and personal growth. Lastly, the sociocultural perspective emphasizes the influence of cultural, social, and environmental factors on behavior and mental health.