Have you ever wondered what causes schizophrenia? Did you know that there are hundreds of different phobias? Do you understand the difference between normal personality traits and a personality disorder? In this introduction to the study of abnormal psychology, gain basic knowledge of psychological disorders, their diagnoses and treatment. Discuss anxiety disorders, somatic and dissociative disorders, mood disorders, personality disorders, psychosis and schizophrenia. Also, review briefly the history of mental health.