A study conducted in Germany found that men with higher IQs are less inclined to traditional values, but the lead author, psychologist and intelligence researcher Maximilian Krolo of Saarland University, said the researchers did not find these differences among women.
But was causality established? That’s a very difficult thing to do. I’d like to read the paper if you can find it.
Because it’s just as plausible that people predisposed to think critically are more likely to both go to college and move left politically in early adulthood.