I have 22 years of experience and specialize in the field of social psychology, with specific knowledge of decision making, affiliation, self-concept and self-esteem. I have published on such topics as self-esteem and self-protective behaviors, costs and benefits of allegiance and motivation, performance, and creativity. I have testified on motivations underlying the purchase of university-affiliated apparel, needs satisfied by affiliation with a university and its teams, and its implications for trademark infringement cases.