Diederik Stapel


Diederik Alexander Stapel is a Dutch former professor of social psychology at Tilburg University. In 2011 Tilburg University suspended Stapel for fabricating and manipulating data for his research publications. This scientific misconduct took place over a number of years and affected dozens of his publications. As of 2019, Stapel has had 58 of these publications retracted and is by some regarded 'the biggest con man in academic science'.


Diederik Alexander Stapel is a Dutch former professor of social psychology at Tilburg University. In 2011 Tilburg University suspended Stapel for fabricating and manipulating data for his research publications. This scientific misconduct took place over a number of years and affected dozens of his publications. As of 2019, Stapel has had 58 of these publications retracted and is by some regarded 'the biggest con man in academic science'.
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