Eric-Jan Wagenmakers (born May 21, 1972) is a Dutch mathematical psychologist. He is a professor at the Methodology Unit in the Department of Psychology at the

University of Amsterdam The University of Amsterdam (abbreviated as UvA, nl, Universiteit van Amsterdam) is a public research university located in Amsterdam, Netherlands. The UvA is one of two large, publicly funded research universities in the city, the other being ...

(UvA). Since 2012, he has also been Professor of Neurocognitive Modeling: Interdisciplinary Integration at UvA's Faculty of Social and Behavioral Sciences. A noted expert on

research methods Research is "creativity, creative and systematic work undertaken to increase the stock of knowledge". It involves the collection, organization and analysis of evidence to increase understanding of a topic, characterized by a particular att ...

in psychology, he has been highly critical of some dubious practices by his fellow psychologists, including

Daryl Bem Daryl J. Bem (born June 10, 1938) is a social psychologist and professor emeritus at Cornell University. He is the originator of the self-perception theory of attitude formation and change. He has also researched psi phenomena, group decision ...

's research purporting to find support for the parapsychological concept of

extrasensory perception Extrasensory perception or ESP, also called sixth sense, is a claimed paranormal ability pertaining to reception of information not gained through the recognized physical senses, but sensed with the mind. The term was adopted by Duke Universit ...

, and the tendency for psychologists in general to favor the publication of studies with surprising, eye-catching results. He has also been actively addressing the

replication crisis The replication crisis (also called the replicability crisis and the reproducibility crisis) is an ongoing methodological crisis in which the results of many scientific studies are difficult or impossible to reproduce. Because the reproducibi ...

in psychology by helping to conduct a series of studies aimed at reproducing a 1988 study on the supposed effects of smiling on the perceived funniness of cartoons.

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* * Dutch psychologists 1972 births Living people Academic staff of the University of Amsterdam People from Borsele University of Groningen alumni University of Amsterdam alumni Bayesian statisticians Fellows of the Association for Psychological Science Dutch statisticians Dutch mathematicians Experimental psychologists Quantitative psychologists {{Netherlands-academic-bio-stub