The course reviews the predisposing factors that may occur during the development from infancy to adolescence. Childhood and adolescent diagnostic groups that take place in the latest classification system are introduced. Current empirical findings and conceptual models and/or influential theories on selected psychopathological disorders are discussed. Course covers assessment approaches and methods of treatment. Behavioral, cognitive, sociocultural, and genetic and neuro-scientific aspects are the subject of emphasis as well as prevention, intervention, assessment, etiology, prognosis and symptom management of abnormal behavior. The handbook of psychology, the DSM-V will be the primary source used to explore the vast range of psychological disorders.