Dawson is a junior at Christopher Newport University, Newport News, VA, in the department of Organismal and Environmental Biology.  He seeks to determine if throat color in long-tailed brush lizards, Urosaurus Graciosus, is related to agressiveness and social dominance.  A second goal of his study is to determine if the social dominance hierarchy is absolute in long-tailed brush lizards, or if manipulating the costs/benefits of preferred resources in a given ecosystem will affect their levels of aggressiveness and dominance.