… and stages of formal intervention. The medical, behavioral, social, and family systems models of treatment, and various approaches to treatment are also discussed. Psychology (PSYCH) PSYCH 001 General Psychology I (3 units) UC:CSU IGETC … on the nervous system, behavior, mood, and health. Both legal and illegal chemical substances are considered, including various “street” drugs, common prescription drugs, over-the-counter medications, tobacco, and alcohol. Special importance is …