People increasingly distance themselves from those who hold opposing views, but a new analysis suggests the root cause differs from conventional wisdom. Rather than simply disagreeing on core beliefs, people become hostile when they believe others are factually mistaken.
This distinction carries weight for democratic discourse. When Americans encounter different political perspectives, they tend to tolerate disagreement on values or priorities. What triggers anger and polarization is the conviction that the other side operates from false information or faulty reasoning.
The implications reshape how we understand political division. Republicans and Democrats may both believe their positions rest on accurate facts. Each side views the opposing party as fundamentally wrong about reality itself, not merely wrong about how to interpret shared facts. This creates a deeper chasm than simple preference disagreement would suggest.
The research challenges the common framing that polarization stems from tribes with different values fighting over finite resources. Instead, it points to epistemic division—disagreement about what is actually true. When citizens believe opponents operate from delusion or misinformation, bridge-building becomes harder. You can negotiate over priorities. You cannot compromise on facts.
This dynamic appears across recent political battles. Debates over election integrity, pandemic response, and inflation involve fundamental disputes about what happened and why, not merely how to respond. Each side accuses the other of ignoring evidence or peddling falsehoods.
The finding suggests current depolarization strategies miss their target. Appeals to shared values ring hollow when people believe the other side literally misunderstands basic reality. Rebuilding trust requires addressing the factual disputes themselves, not just encouraging people to respect differences.
For politicians and journalists, this presents a governance challenge. Bridging disagreement demands establishing shared factual ground first. Without consensus on what is true, even procedural agreements fracture quickly.