The linked study does show that correlation. But I personally believe it’s more of a second-order effect.
replyVegetarianism selects for openness and analytical/reflective thinking but the extra step to veganism selects for absolutism/purity and rigid category-based thinking. Reflective thinking and openness are definitely correlated to IQ so I believe the result in the article.
The point here is to know your audience. The people on this site are perfectly primed to respond well to a vegetarian/environmental point of view.
> Vegetarianism selects for openness and analytical/reflective thinking but the extra step to veganism selects for absolutism/purity
replyI don't follow how you conclude this at all. there is nothing to indicate this is the case.
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