It seems like there's an interesting bias in the test methodology. If you are a person who prefers simple, common or short words, the test is much harder becau

It seems like there's an interesting bias in the test methodology. If you are a person who prefers simple, common or short words, the test is much harder because short words tend to have many distinct meanings. When you cross correlate a lot of short words there will inevitably be semantic overlap. Longer, more specialised words have greater semantic distance. Therefore not clear whether this measures creativity or propensity to use longer / less common words. This will tend to correlate with "years of formal education". It would be interesting to see if this is measuring anything different than a vocabulary test + the ability to understand the instructions. One option to balance this out would be to "weight" words by their frequency to reflect that finding disjoint common words is harder.