Prerequisite: PSYC301 or eqivalent. For students who have had PSYC301, written permissin of the instructor and department is required. Restricted to PSYC (major code 20010) students only. Cross-listed with N ACS728O. Credit only granted for PSYC489G or NACS728O. Formerly: P SYC309Z. T his course presents a comprehensive overview of the field of b ehavioral endocrinology, the study of the relationship between h ormones and behavior, from a psychobiological perspective. We will e xamine the major mammalian endocrine systems, how hormones influence s ex determination, how hormones underlie sex differences in brain s tructure and function, the role of hormones in parental and social b ehaviors, mood disorders, homeostasis, cognition and stress. Both n ormal and abnormal hormonal pathologies will be discussed. Due to the p hysiological and experimental erspectives of this course, much of the p henomenology that we will be studying will be based on research in s pecies other than humans. This species comparative approach will r eveal interesting "ways of doing things" that are intriguingly d ifferent from how "humans" do things.