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Abstract: In this article, we examine whether there is genetic overlap between personality traits and political participation, interest, and efficacy. We make several contributions to the literature. First, we use new data from a large sample of twins from Denmark to examine the link between genes, the Big Five traits, and political behavior. Previous research in this area has not examined the Danish context. Second, because our measures have some overlap with those used in previous studies, we are able to examine whether previous findings replicate in a different sample. Finally, we extend the literature by examining the possible genetic link between some personality and political traits that have not yet been explored. Overall, we find that genes account for a fairly large share of the correlation between two of the Big Five personality traits (openness and extraversion), political participation, and political interest. Thus, most of the relationship between these personality traits and our measures of political behavior can be accounted for by a common underlying genetic component. [ABSTRACT FROM AUTHOR]

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Recent studies have shown that variation in political attitudes and participation can be attributed to both genes and the environment. This finding raises the question of why genes matter to participation, and by which pathways. Two hypotheses suggest that feelings of civic duty and sense of political efficacy intermediate the relationship between genes and political participation and, thus, that these traits have a common heritable component. If so, how robust are the relationships across cultural contexts? Utilizing two new twin studies on political traits, one in Denmark and one in the United States, we show that the heritability of political participation and political efficacy is remarkably similar across cultures. Moreover, most of the covariation between efficacy and political participation is accounted for by a common underlying genetic component. [ABSTRACT FROM PUBLISHER]

Many studies have shown that political efficacy, interest in politics, and political knowledge are strongly related to political participation. In most analyses, these variables are described as having a causal effect on participation. In this paper, we examine the extent to which the relationship between political attitudes and participation is confounded by familial factors. By using the discordant twin design, which relates within-pair differences in political attitudes to within-pair differences in political participation, we are able to examine the relationship net of confounding factors rooted in genes and the early rearing environment. Using four samples of monozygotic twins from the United States, Sweden, Germany, and Denmark, we find that the relationship between political attitudes and political participation is confounded to a large extent. This study makes an important contribution to the literature on political attitudes and political participation given the longstanding idea that attitudes cause political participation. Our findings also have practical implications for those interested in elevating levels of political participation. In addition, they have important implications for how scholars theorize about, model, and examine political participation in the future. [ABSTRACT FROM AUTHOR]