It is scientific malpractice to use Mechanical Turk to establish a human-level baseline for cognitively-demanding tasks, even if you ignore the issue of people

It is scientific malpractice to use Mechanical Turk to establish a human-level baseline for cognitively-demanding tasks, even if you ignore the issue of people outsourcing tasks to ChatGPT. The pay is abysmal and if it seems like the task is purely academic and hence part of a study, there is almost no incentive to put in effort: researchers won't deny payment for a bad answer. Since you get paid either way, there is a strong incentive to quickly give up thinking about a tricky ARC problem and simply guess a solution. (IQ tests in general have this problem: cynicism and laziness are indistinguishable from actual mistakes.) Note that across all MTurk workers, 790/800 of evaluation tasks were successfully completed. I think 98% is actually a better number for human performance than 60%, as a proxy for "how well would a single human of above-average intelligence perform if they put maximal effort into each question?" It is an overestimate, but 60% is a vast underestimate.