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Tuesday, September 25, 2012

False positives: fraud and misconduct are threatening scientific research

High-profile cases and modern technology are putting scientific deceit under the microscope

By Alok Jha
The Guardian
Originally published September 13, 2012

Dirk Smeesters had spent several years of his career as a social psychologist at Erasmus University in Rotterdam studying how consumers behaved in different situations. Did colour have an effect on what they bought? How did death-related stories in the media affect how people picked products? And was it better to use supermodels in cosmetics adverts than average-looking women?

The questions are certainly intriguing, but unfortunately for anyone wanting truthful answers, some of Smeesters' work turned out to be fraudulent. The psychologist, who admitted "massaging" the data in some of his papers, resigned from his position in June after being investigated by his university, which had been tipped off by Uri Simonsohn from the University of Pennsylvania in Philadelphia. Simonsohn carried out an independent analysis of the data and was suspicious of how perfect many of Smeesters' results seemed when, statistically speaking, there should have been more variation in his measurements.

The case, which led to two scientific papers being retracted, came on the heels of an even bigger fraud, uncovered last year, perpetrated by the Dutch psychologist Diederik Stapel. He was found to have fabricated data for years and published it in at least 30 peer-reviewed papers, including a report in the journal Science about how untidy environments may encourage discrimination.