Political Views and Brain Structure
Author Information
Author(s): Kanai Ryota, Feilden Tom, Firth Colin, Rees Geraint
Primary Institution: University College London
Hypothesis
Political liberalism is associated with differences in gray matter volume in the anterior cingulate cortex compared to conservatism.
Conclusion
The study found that greater liberalism is linked to increased gray matter volume in the anterior cingulate cortex, while greater conservatism is associated with increased volume in the right amygdala.
Supporting Evidence
- Liberalism was associated with increased gray matter volume in the anterior cingulate cortex.
- Conservatism was linked to increased gray matter volume in the right amygdala.
- The findings were replicated in an independent sample of participants.
Takeaway
This study shows that how liberal or conservative you are can be seen in the size of certain parts of your brain.
Methodology
The study used structural MRI scans and voxel-based morphometry to analyze the relationship between self-reported political attitudes and gray matter volume.
Potential Biases
The study may be influenced by self-reported measures of political orientation, which can be subjective.
Limitations
The study's findings are based on a homogenous sample of young adults, limiting generalizability to other age groups and demographics.
Participant Demographics
90 healthy young adults (mean age 23.5, 61% female) from a university population.
Statistical Information
P-Value
0.010
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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