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Past research has found that trait positive affect as measured by the Positive and Negative Affect Schedule (PANAS) and extraversion as measured by the NEO-Five Factor Inventory (NEO-FFI) are highly correlated. We examined the relation between these two measures within the context of three social behaviors. Approximately 4 months before graduation, college seniors entering the job market completed the PANAS and the NEO-FFI and reported on their social activities during college. Three months later, these students were contacted again and described their job search strategies and success at obtaining follow-up job interviews. Trait positive affect scores and extraversion scores were highly correlated and both predicted behavior in each of the three areas investigated. Regression analyses indicated that trait positive affect predicted behavior in all three areas after the effects of extraversion were removed. However, extraversion did not add significantly to predicting behavior in any of the three areas after the effects of trait positive affect were removed. The findings have implications for the conceptual relation between extraversion and trait positive affect.