Diederik Stapel is a Dutch former professor of social psychology, who admitted he conducted data fabrication and manipulation. …
In response to a report from dr. Uri Simonsohn about suspicions of scientific misconduct or fraud by prof. dr. Dirk Smeesters, a committee was appointed in 2012. Based in their findings, three of Smeesters’ articles were retracted. However, rumours persisted and a follow-up committee was appointed which reported on their findings in 2014. The committee found several cases of imputable inaccuracies in Smeesters’ research and recommended retraction of four more papers. A lot of raw and processed data was missing, even of recent studies. Furthermore, many minor inconsistencies were found (wrong rounding of measures in 33 out of 54 investigated studies and inconsistent numbers of reported participants and numbers in the datasets).
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