Modeling Political Efficacy and Interest Group Membership

Traditionally, political efficacy is measured at the individual level and studied as an individual level attribute in isolation from macro level events. In many studies, political efficacy is viewed as largely static, affected primarily by levels of income and education. If, however, an individual's feeling of efficacy is partly conditioned on macro level occurrences or expected macro level occurrences, then individual efficacy cannot be studied in isolation from the macro level context. In this article, I create a game theoretic, micro level foundation for macro level interest group behavior. I use a simple participation game to model a form of individual level political efficacy and detail the empirical implications of the hypothesized individual level behavior for the aggregate levels of group membership. The results suggest that empirical studies of the effects of political efficacy on collective efforts are susceptible to sampling and measurement problems.