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Why Do Some Find it Hard to Disagree? An fMRI Study
Juan F Domínguez D1, Sreyneth A Taing2, Pascal Molenberghs1
1Social Neuroscience Lab, School of Psychological Sciences and Monash Institute of Cognitive and Clinical Neurosciences, Monash University Melbourne, VIC, Australia.
Frontiers in Human Neuroscience
|February 10, 2016
Summary
Difficulty disagreeing stems from heightened cognitive dissonance responses in certain individuals. Brain activity in key areas increased when less agreeable people actually disagreed, regardless of expertise level.
Area of Science:
- Neuroscience
- Social Psychology
- Cognitive Science
Background:
- Understanding individual differences in disagreement behavior is limited.
- The influence of social factors, such as perceived expertise, on disagreement is not well-understood.
Purpose of the Study:
- To investigate the neural mechanisms underlying individual differences in disagreement.
- To examine how cognitive dissonance and perceived expertise affect disagreement behavior and brain activity.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
- Participants' frequency of disagreement and responses to statements were recorded.
- The effect of perceived expertise (high vs. low) on disagreement was assessed.
Main Results:
- Brain activity in a network including the posterior medial frontal cortex (pMFC) and anterior insula (AI) varied with individual disagreement frequency.
- Participants who disagreed less frequently showed greater activation in these areas when they did disagree.
- Perceived expertise did not influence disagreement behavior or neural responses.
Conclusions:
- Heightened cognitive dissonance responses may explain why some individuals find it harder to disagree.
- The findings suggest a neural basis for individual differences in social conformity and disagreement.
- Expertise level does not appear to modulate the neural or behavioral aspects of disagreement in this context.
