DISPOSITIONAL OPTIMISM AND THE EMERGENCE OF SOCIAL NETWORK DIVERSITY

Personality has yet to be examined as an indirect yet powerful determinant of the diversity of personal social networks that is independent of preference- and population-based mechanisms. I use the 2004 General Social Survey to illustrate how dispositional optimism shapes core discussion network size as well as demographic heterophily among core ties. I find that optimism is associated with enhanced network size as well as ties among nonkin and across lines of age, education, and race. Following these results, I urge closer attention to personality as it dynamically shapes the social structure of opportunities and resources.