Yeah, I feel like any measure like this starts as a way to measure a proxy for IQ. But as it becomes a known thing, people train for it and it becomes a measure

Yeah, I feel like any measure like this starts as a way to measure a proxy for IQ. But as it becomes a known thing, people train for it and it becomes a measure of conscientiousness (In the big five sense, aka diligent trainers rise to the top).