A number of studies have found that human biology can be linked with political orientation.[1] This means that an individual's biology may predispose them to a particular political orientation and ideology. Many of the studies linking biology to politics remain controversial and nonreplicated.[2][3]
Studies have found that subjects with right-wing, or conservative in the United States, political views have larger amygdalae and are more sensitive to disgust. Those with left-wing, or liberal in the United States, political views have a larger volume of grey matter in the anterior cingulate cortex and are more attentive to incongruent information. Conservatives have a stronger sympathetic nervous system response to threatening images and are more sensitive to threatening facial expressions.[4]
Genetic factors account for at least some of the variation of political views.[5][6] From the perspective of evolutionary psychology, conflicts regarding redistribution of wealth may have been common in the ancestral environment and humans may have developed psychological mechanisms for judging their own chances of succeeding in such conflicts. These mechanisms affect political views.
^Jost, John T.; Amodio, David M. (13 November 2011). "Political ideology as motivated social cognition: Behavioral and neuroscientific evidence" (PDF). Motivation and Emotion. 36 (1): 55–64. doi:10.1007/s11031-011-9260-7. S2CID 10675844.
^Buchen, Lizzie (2012-10-25). "Biology and ideology: The anatomy of politics". Nature. 490 (7421): 466–468. Bibcode:2012Natur.490..466B. doi:10.1038/490466a. PMID 23099382.
^Davies, James (Dec 1983). "The Proper Biological Study of Politics". Political Psychology. 4 (4): 731–743. doi:10.2307/3791065. JSTOR 3791065.
^Kanai, Ryota; Feilden, Tom; Firth, Colin; Rees, Geraint (2011-04-26). "Political Orientations Are Correlated with Brain Structure in Young Adults". Current Biology. 21 (8): 677–680. Bibcode:2011CBio...21..677K. doi:10.1016/j.cub.2011.03.017. ISSN 0960-9822. PMC 3092984. PMID 21474316.
^Dolan, Eric W. (2024-04-10). "Genetic variations help explain the link between cognitive ability and liberalism". PsyPost - Psychology News. Retrieved 2024-04-12.
^Kleppesto, Thomas Haarklau; Czajkowski, Nikolai Olavi; Sheehy-Skeffington, Jennifer; Vassend, Olav; Roysamb, Espen; Eftedal, Nikolai Haahjem; Kunst, Jonas R.; Ystrom, Eivind; Thomsen, Lotte (2024-02-22). "The genetic underpinnings of right-wing authoritarianism and social dominance orientation explain political attitudes beyond Big Five personality". Journal of Personality. doi:10.1111/jopy.12921. ISSN 0022-3506. PMID 38386613.
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