This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Why do disagreements about vaccines, climate change or elections often feel so personal? Our research suggests it is not simply because other people have different beliefs.
It is because we think those beliefs are mistaken. We are behavioral scientists who study the role of beliefs in politics and everyday life. Our new research finds that people are more disturbed by others' beliefs when they feel those beliefs are not merely different from their own but are based on incorrect information.
For example, two people may disagree about the ideal level of immigration, but if one believes immigrants commit more crime than U.S.-born residents and the other is convinced the statistics show otherwise, their disagreement becomes a conflict over reality and truth. That distinction matters because public debate over polarization often starts with a simple idea: People prefer others who think like them—"birds of a feather flock together," as the saying goes. Social scientists call this belief homophily, and many researchers have studied how these shared beliefs shape friendships, neighborhoods, media habits and political life.
The idea has strong intuitive appeal: People often live near others who share their politics. People also tend to consume news and social media that fit their existing views, a pattern linked to echo chambers and political polarization. Our research, based on four studies with more than 2,000 U.S. adults, suggests that the story that we and others have formulated is incomplete.
People do not react the same way to all disagreements: They are especially bothered when they are convinced that someone is wrong. In one study, we asked participants to recall a situation in which another person believed one thing and they believed something else. Some participants described a situation involving different beliefs, while others recalled one with incorrect beliefs.
For example, one participant recalled a disagreement about whether couples should live together before marriage, viewing it as a difference in priorities rather than a dispute over reality. By contrast, another participant recalled disagreeing with a friend who believed drinking soda and eating fast food were harmless, a belief the participant considered factually wrong. Their emotional reactions were dramatically different: Participants who saw the other person's belief as incorrect reported having felt more disturbed, frustrated and upset than participants who saw the belief as simply different.
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