In this paper, we argue that a stable set of characteristics—personality—can help explain mass political opinions and behavior. By analyzing data collected from over 750 people, we examine the influence of the Five‐Factor Model of personality on ideology, partisanship, political efficacy, and two forms of political participation. After controlling for a host of demographic factors, we find that openness to experience, agreeableness, conscientiousness, and extraversion help explain public opinion and political behavior. Neuroticism is the only factor that does not influence political life. We conclude by comparing these results to other findings in the field and suggest directions for future research.
Goldberg's International Personality Item Pool (IPIP; Goldberg, 1999) provides researchers with publicdomain, free-access personality measurement scales that are proxies of well-established published scales. One of the more commonly used IPIP sets employs 50 items to measure the 5 broad domains of the 5-factor model, with 10 items per factor. The M5-50 (McCord, 2002) is a specific ordering and presentation of this 50-item set. Using data from a sample of 760 faculty, staff, and students at a midsized university, the authors assessed the reliability and construct validity of the M5-50. Cronbach's alphas on the 5 scales ranged from acceptable to excellent. Confirmatory factor analysis indicated reasonably good model fit. Researchers who wish to measure personality would be well advised to consider using the M5-50.
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