Lecture, two and one half hours. Exploration of physiological, psychological, and sociocultural variables associated with sexual expression, identity, orientation, and behavior. Additional focus on clinical issues most often presented in social work practice by individuals and couples, e.g., desire discrepancy in couples and extramarital affairs. Exploration of specific sexual dysfunctions identified in the Diagnostic and Statistical Manual of Mental Disorders in terms of their etiology and current treatment models used to address them. Discussion of field of sex therapy, past and present, as well as evidence bases for treatment. Neurobiology and new research on brain chemistry are highlighted as related to human sexuality and emotional relationships. S/U or letter grading.