Explore the function of the endocrine system and its role in behavior, specifically as examined in animal model systems. The social, nutritional and sensory environment of an organism can dramatically affect the expression of specific hormones. Those hormones, in turn, can determine the development, degree of plasticity and output of the nervous system. Thus, the behavior of an organism is set in a background of endocrine influences. This course examines the endocrine system and how it interacts with the nervous system to influence behavior in a range of organisms.