TY - JOUR
T1 - Amygdala structure and the tendency to regard the social system as legitimate and desirable
AU - Hannah Nam, H.
AU - Jost, John T.
AU - Kaggen, Lisa
AU - Campbell-Meiklejohn, Daniel
AU - Van Bavel, Jay J.
N1 - Publisher Copyright:
© 2017 The Author(s).
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Individual variation in preferences to maintain versus change the societal status quo can manifest in the political realm by choosing leaders and policies that reinforce or undermine existing inequalities 1. We sought to understand which individuals are likely to defend or challenge inequality in society by exploring the neuroanatomical substrates of system justification tendencies. In two independent neuroimaging studies, we observed that larger bilateral amygdala volume was positively correlated with the tendency to believe that the existing social order was legitimate and desirable. These results held for members of advantaged and disadvantaged groups (men and women, respectively). Furthermore, individuals with larger amygdala volume were less likely to participate in subsequent protest movements. We ruled out alternative explanations in terms of attitudinal extremity and political orientation per se. Exploratory whole-brain analyses suggested that system justification effects may extend to structures that are adjacent to the amygdala, including parts of the insula and the orbitofrontal cortex. These findings suggest that the amygdala may provide a neural substrate for maintaining the societal status quo, and opens avenues for further investigation into the association between system justification and other neuroanatomical regions.
AB - Individual variation in preferences to maintain versus change the societal status quo can manifest in the political realm by choosing leaders and policies that reinforce or undermine existing inequalities 1. We sought to understand which individuals are likely to defend or challenge inequality in society by exploring the neuroanatomical substrates of system justification tendencies. In two independent neuroimaging studies, we observed that larger bilateral amygdala volume was positively correlated with the tendency to believe that the existing social order was legitimate and desirable. These results held for members of advantaged and disadvantaged groups (men and women, respectively). Furthermore, individuals with larger amygdala volume were less likely to participate in subsequent protest movements. We ruled out alternative explanations in terms of attitudinal extremity and political orientation per se. Exploratory whole-brain analyses suggested that system justification effects may extend to structures that are adjacent to the amygdala, including parts of the insula and the orbitofrontal cortex. These findings suggest that the amygdala may provide a neural substrate for maintaining the societal status quo, and opens avenues for further investigation into the association between system justification and other neuroanatomical regions.
UR - http://www.scopus.com/inward/record.url?scp=85042342730&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85042342730&partnerID=8YFLogxK
U2 - 10.1038/s41562-017-0248-5
DO - 10.1038/s41562-017-0248-5
M3 - Article
AN - SCOPUS:85042342730
SN - 2397-3374
VL - 2
SP - 133
EP - 138
JO - Nature human behaviour
JF - Nature human behaviour
IS - 2
ER -