Summary of chapter in Psych text presenting several concepts on psychological disorders including: CONCEPT I: Defining Psychological Disorders, CONCEPT II: Perspectives on Psychological Disorders, CONCEPT III: Classifying Psychological Disorders, CONCEPT IV: Anxiety Disorders, CONCEPT V: Somatoform Disorders, CONCEPT VI: Dissociative Disorders, CONCEPT VII: Mood Disorders, CONCEPT VIII: Schizophrenia, CONCEPT IX: Personality Disorders, CONCEPT X: Psychoactive Substance Use Disorders.