A 2019 investigation launched by the U.K. institution found 26 papers coauthored by Hans Eysenck and Ronald Grossarth-Maticek, a social scientist in Germany, were based on questionable data and contained findings that were “incompatible with modern clinical science and the understanding of disease processes.”

For example, the two researchers’ data showed people with a “cancer-prone” personality were more than 120 times as likely to die from the disease as were those with a “healthy” personality, Anthony Pelosi, a longtime Eysenck critic, pointed out in an article preceding the university probe.

Based on its review, the investigation committee recommended King’s College London where the Hans Eysenck, psychologist, was a professor emeritus when he died in 1997, inform journal editors that it considered the results and conclusions of the 26 papers “unsafe.” Several retractions, and dozens of expressions of concern, quickly followed.

Source https://retractionwatch.com/2025/12/03/number-of-unsafe-publications-by-psychologist-hans-eysenck-could-be-high-and-far-reaching/

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