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A randomised online experiment gave 1,174 adults aged 25 to 45 an incentivised business problem-solving task, some with a generative-AI assistant and some without. Unaided, the higher-education group beat the lower-education group by 0.548 standard deviations. With AI the gap fell to 0.139 — about three-quarters of the education gap closed

SourceNBER Working Paper 34851·May 2026 revision

Verified 2026-08-18

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