The genetic underpinnings of right-wing authoritarianism and social dominance orientation explain political attitudes beyond Big Five personality

IF 5 1区心理学 Q1 Psychology Journal of Personality Pub Date : 2024-02-22 DOI:10.1111/jopy.12921

Thomas Haarklau Kleppesto, Nikolai Olavi Czajkowski, Jennifer Sheehy-Skeffington, Olav Vassend, Espen Roysamb, Nikolai Haahjem Eftedal, Jonas R. Kunst, Eivind Ystrom, Lotte Thomsen

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Abstract

Objective

Political attitudes are predicted by the key ideological variables of right-wing authoritarianism (RWA) and social dominance orientation (SDO), as well as some of the Big Five personality traits. Past research indicates that personality and ideological traits are correlated for genetic reasons. A question that has yet to be tested concerns whether the genetic variation underlying the ideological traits of RWA and SDO has distinct contributions to political attitudes, or if genetic variation in political attitudes is subsumed under the genetic variation underlying standard Big Five personality traits.

Method

We use data from a sample of 1987 Norwegian twins to assess the genetic and environmental relationships between the Big Five personality traits, RWA, SDO, and their separate contributions to political policy attitudes.

Results

RWA and SDO exhibit very high genetic correlation (r = 0.78) with each other and some genetic overlap with the personality traits of openness and agreeableness. Importantly, they share a larger genetic substrate with political attitudes (e.g., deporting an ethnic minority) than do Big Five personality traits, a relationship that persists even when controlling for the genetic foundations underlying personality traits.

Conclusion

Our results suggest that the genetic foundations of ideological traits and political attitudes are largely non-overlapping with the genetic foundations of Big Five personality traits.

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右翼威权主义和社会主导取向的遗传基础对政治态度的解释超越了大五人格

右翼威权主义（RWA）和社会主导取向（SDO）这两个关键的意识形态变量，以及一些大五人格特质都能预测政治态度。过去的研究表明，人格特质和意识形态特质因遗传原因而相关。一个有待检验的问题是，右翼专制主义和社会主导倾向这两个意识形态特质的遗传变异是否对政治态度有不同的影响，或者政治态度的遗传变异是否被归入标准的大五人格特质的遗传变异中。

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来源期刊

Journal of Personality PSYCHOLOGY, SOCIAL-

CiteScore

9.60

自引率

6.00%

发文量

100

期刊介绍： Journal of Personality publishes scientific investigations in the field of personality. It focuses particularly on personality and behavior dynamics, personality development, and individual differences in the cognitive, affective, and interpersonal domains. The journal reflects and stimulates interest in the growth of new theoretical and methodological approaches in personality psychology.