Mike Meager is a preeminent neurologist at Grossman/NYU, Jay Van Bavel is high-level academia. They didn't go looking for something to fit it into an argument, they used hard science to test the results.

The previous flagged posts are not "medical problems" it's hard science at Northwestern's brain lab, one of the premiere labs in the country.

This is fundamental, peer-reviewed research about how ideologies are developed. How fundamentalism and extremism as biases against flexible thinking are becoming epidemic now. The research is empirical, and it's built first in a theoretical approach (theory is evidence mapped in deeper hypothesis) and then developed through empirical results.

These are both decades of peer-reviewed approaches culminating in these papers, read the citations, check the academics, they are the highest caliber.