General Discussion

The main problem is Left-Wing and Liberalism aren't the same things. When the scientists compared high intelligence, they found more liberalism and lower authoritarianism. (Which, there are all kinds of weird issues about how they're measuring and categorizing all this accompanied by confounding factors in education, but let's just accept it at face value for the moment)

Left-Wing isn't anti-authoritarianism, lol. It's very authoritarian in nature.

But liberalism, when we think of it as critical thinking, pluralism, tolerance, skepticism, and receptiveness to change and new ideas is lower on authoritarianism. If you look at hard Marxists, they are the dead opposite of anti-authoritarian. They very much want to impose their vision. Liberals ain't that.

The question is - how authoritarian is a person? And I do find the more intelligent people are, the less authoritarian they are inclined to be. (The authoritarians tend to be the ones who fancy themselves smart, but aren't nearly as bright as they esteem)

Because there is a lot of that on the harder Left. A lot. But people considered liberal in the typical Western tradition tend not to be that.

And the fact the author tries to lump it all together speaks to a political purpose in presentation rather than an honest assessment of personality and intelligence features.

Still. I expect lotion sales to go up.