Being better at math didn’t just fail to help partisans converge on the right answer. It actually drove them further apart. Among those with weak math skills, subjects were 25 percentage points likelier to get the answer right when it bolstered their ideology. But partisans with strong math skills were 45 percentage points likelier to get the answer right when it fit their ideology. The smarter the person is, the dumber politics can make them.II18
