People experience stronger negative emotions and are more likely to avoid others when they believe those others hold false beliefs—not just different ones—according to new research published in Political Psychology.
For years, researchers have pointed to a concept called “belief homophily” to explain why societies fracture along ideological lines. Belief homophily refers to the idea that people prefer the company of those who think like them and dislike encountering views that differ from their own. This tendency has been used to explain phenomena such as why social media feeds become “echo chambers” full of agreeable content. However, a new study challenges the idea that disagreement itself is the main problem.
The researchers argue that people may be relatively comfortable with differences in opinion when they are uncertain who is right. What appears to be much more upsetting is the belief that another person holds a false view of reality. The researchers suspect this is because false beliefs threaten our sense of a shared reality, undermine our innate desire for the world to make sense, and raise the fear that the other person will make bad decisions with harmful consequences. According to the authors, this distinction could help explain why some disagreements become emotionally charged while others remain relatively harmless.
To test this theory, the study was led by Andras Molnar of the University of Michigan, together with George Loewenstein of Carnegie Mellon University. Across four online studies, the researchers examined responses from 2,027 adults in the United States. The final sample had an average age of approximately 39 years and included 969 women and 1,058 men. Participants were asked to recall real-life disagreements, respond to hypothetical scenarios, or react to social media posts that conflicted with their views.
In the first two studies, participants recalled disagreements from their own lives. Those who viewed the other person’s beliefs as “incorrect” reported feeling significantly more disturbed, frustrated, upset, and less calm than those who saw the disagreement as a simple “difference” in perspective. Importantly, the more confident people were that the other person was wrong, the stronger their negative emotional response became. Conversely, confidence that a belief was merely “different” did not predict negative emotional responses.
The researchers found similar results in later experiments. In one study, participants stated their views on divisive topics such as climate change, vaccination, and policing, and then read hypothetical social media posts expressing the opposing view. People who were more convinced that the post’s author held false beliefs reported greater distress and were more likely to say they would block the author or avoid interacting with them. They were also significantly less willing to imagine having them as a neighbor, colleague, family member, or romantic partner.
A final experiment tested whether merely changing the framing of a disagreement could influence reactions. Participants read identical scenarios, but some were reminded that another person’s beliefs were “different,” while others were reminded that those beliefs were “incorrect.” Even this subtle change increased feelings of disturbance, suggesting that perceptions of falsehood can intensify emotional responses independently of the disagreement itself.
The authors concluded, “Our findings challenge assumptions about the origins of belief-based social division and polarization. Rather than simply avoiding those who see the world differently, people appear particularly sensitive to interactions in which they are convinced that someone else’s beliefs are false.”
The authors note several important caveats. The studies relied on self-reported emotions and hypothetical or recalled situations, which may not fully capture how people behave in real-world disagreements. Furthermore, disagreements recalled by participants were often milder and caused less negative affect than the divisive sociopolitical scenarios presented in the later experiments. Also, the sample was drawn entirely from the United States via an online platform, so the findings may not apply to other cultural contexts.
The study, “The misery of misbelief: People are more disturbed by others’ false beliefs than by differences in beliefs,” was authored by Andras Molnar and George Loewenstein.