Studies like this are dangerous.

1. Scientific articles are almost like luxury clickbait these days. Let’s be frank: how many of us paid even the minimum of 12 USD for 48-hour access to the complete study and know what they even mean by the title?

2. This study in particular will likely engender the notion, that will now be taken as fact, that political intolerance is indicative of lack of “cognitive ability” (whatever that means). This point itself is an assumption, because the abstract consists of stanzas of loaded jargon.