It wasn't even an IQ test. According to the paper, they gave participants 10 words, with each word being presented with 5 other words. They were instructed to m

It wasn't even an IQ test. According to the paper, they gave participants 10 words, with each word being presented with 5 other words. They were instructed to match each of the 10 target words with the closest of the 5 words. The claim is that vocabulary knowledge is highly correlated with general intelligence, and so this simple test is a proxy for cognitive ability.