Study Reveals Rising Incidence of Fabricated References in Scientific Papers

A peer-reviewed PNAS study, led by Columbia, found a significant increase in fabricated references across various scientific fields, including physics, chemistry, materials science, engineering, and computing. The study, which analyzed 500,000 peer-reviewed journal papers from January 2023 through March 2026, indicates that the share of affected papers rose from 1 in 1,600 in 2023 to 1 in 435 in the first quarter of 2026. The research measures the prevalence and growth of this issue but does not establish its cause or directly link it to AI tools.