Brian Resnick in Vox:
Anyone who has argued with an opinionated relative or friend about immigration or gun control knows it is often impossible to sway someone with strong views. That’s in part because our brains work hard to ensure the integrity of our worldview: We seek out information to confirm what we already know, and are dismissive or avoidant of facts that are hostile to our core beliefs. But it’s not impossible to make your argument stick. And there’s been some good scientific work on this. Here are two strategies that, based on the evidence, seem promising.
1) If the argument you find convincing doesn’t resonate with someone else, find out what does
The answer to polarization and political division is not simply exposing people to another point of view. In 2017, researchers at Duke, NYU, and Princeton ran an experiment where they paid a large sample of Democratic and Republican Twitter users to read more opinions from the other side. “We found no evidence that inter-group contact on social media reduces political polarization,” the authors wrote. Republicans in the experiment actually grew more conservative over the course of the test. Liberals in the experiment grew slightly more liberal. Whenever we engage in political debates, we all tend to overrate the power of arguments we find personally convincing — and wrongly think the other side will be swayed. On gun control, for instance, liberals are persuaded by stats like: “No other developed country in the world has nearly the same rate of gun violence as does America.” And they think other people will find this compelling, too. Conservatives, meanwhile, often go to this formulation: “The only way to stop a bad guy with a gun is a good guy with a gun.”