I'm working at the Human-Technology Interaction group at Eindhoven University of Technology. My main lines of empirical research focus on conceptual thought and meaning,  and color psychology. I also publish on research methods, (meta)-statistics, and reward structures in science. I love to teach (and was elected as the best teacher of a BA course at Eindhoven University of Technology in 2014), especially about research methods to young scholars (you can follow my free Coursera course here). I prioritize review requests based on how much the articles try to adhere to Open Science principles. I believe science is a collaborative enterprise (see my TEDx talk on this topic here).

You can access the latest version of my CV here.

Empirical Research

I've examined how people can use concrete information (e.g., spatial distance, brightness differences) to structure their thoughts about more abstract things (e.g., valence, power, time). One of my interests is when such associations might be embodied, and when not, and how to improve the empirical and theoretical grounding of social embodiment. In other studies I have investigated how groups emerge from individuals through movement synchronization. For an in press overview chapter on the behavioral consequences of movement synchrony, send me an e-mail. Further interests include the meaning of colors, such as the relation between the valence and brightness of affective pictures, conceptual similarity, but I also like to play around with gadgets, for example to use a smartphone to measure heart rate changes during emotional responses.

Statistics and Methodology

I blog on methods and statistics here, and I regularly teach workshops on methods and statistics. In the last few years I've developed an interest in the importance of (preferably pre-registered) replications and ways to improve how we interpret and design studies. I think we can try a little harder to make science as open and robust as possible. I have written a practical primer on how to calculate and report effect sizes for ANOVAs and t-tests - it includes an easy to use spreadsheet to calculate effect sizes. I've also written a practical primer on how to analyze result repeatedly while collecting data using sequential analysis. And I've written a practical primer on equivalence tests, including my first R package 'TOSTER'. For a recent article on how to evaluate and increase the informational value of studies, read this.


The 12th of May I will be giving a talk at Cardiff University, Wales, titled 'Designing Efficient and Informative Studies'

On the 18th and 19th of May I will give a 2-day workshop at the Ludwig-Maximilians-Universität München in Germany.

On the 15th and 16th of June I will give a colloquim and workshop at the University of Göttingen in Germany.

I'll teach a 4-day workshop on "Improving statistical inferences" at the Department of Psychology at the University of Zürich from the 17th of July to the 20th of July.

I'll present at the 4th Cologne Social Cognition Meeting (http://soccco.uni-koeln.de/cologne-meetings.html) with the topic “Social Cognition 2.0 - What makes good social cognition research?” from the 24th to 26th of Juli in Cologne, Germany.

Old News

Saturday 8th of April, 2017, teacher in the Advanced Statistical methods for reproducible science workshop organized by Dorothy Bishop, Marcus Munafo, and Chris Chambers.

March 23 to 25 I'll attend the Association for Psychological Science in Vienna: http://icps.psychologicalscience.org/program-2017/

I'll be attending the American Psychosomatic Society meeting in Seville between the 15th and 18th of March to talk about significance testing and reproducibility. https://www.psychosomatic.org/AnMeeting/2017annualmeeting.cfm

On the 19th of January I will visit the Euranet meeting in Oslo to talk about funding for replication research.

The 18th of January I taught a workshop on Simulating Data in R at Oslo University.

January 12th, 2017, Workshop on Understanding Statistical Numbers for Journalists, Persgroep. Register at https://campus.persgroep.be/front.php?mod=objects&configid=14038&id=162

December 15 and 16 I'll attend the Berkeley's Initiative for Transparency in the Social Sciences annual meeting: http://www.bitss.org/events/bitss-2016-annual-meeting/

Oktober 28th, Workshop “Open Science and Good Research Practices”, Humboldt-Universit Berlin, Germany. https://www.psychologie.hu-berlin.de/de/studium/gk/events/ws_lakens.pdf

September 22nd, Workshop ‘Designing more informative and more efficient studies’ at Keio University, Tokyo, Japan.

Saturday the 17th of September: Invited Lecture “Towards a reliable and cumulative psychological science” Japanese Society for Social Psychology, Kwansei Gakuin University, Japan.

I'll teach a one-day workshop at the European Association for Decision Making Summer School in Amsterdam on the 13th of July.

On the 8th of July I'll give a talk at TEDxEindhoven.

I'll talk about good research practices at l'Université libre de Bruxelles on June 21st.

On the 28th of April I'll give a talk at the Hogeschool van Amsterdam about color psychology.

From the 26th to the 29th of May, I'll be in Chicago, USA, for the APS conference, to talk about meta-analyses.

On the 11th of June, I'll teach a workshop for science journalists on good science journalism. See http://wetenschapsjournalistiek.nl/

On the 21st and 22nd of April, I'll talk about psychology & technology at the KLI conference. http://www.kurtlewininstituut.nl/kli/kli-conference/general-info/

I'll give a workshop on statistics and methods at the University of Cologne, Germany, on the 25th of February.

On the fourth of March, I'll give a workshop on Frequentist and Bayesian statistics, free for PhD students from the Dutch 3TU universities.

On the 16th and 17 of March, 2016, I'll teach about Sequential Analyses in a workshop on Bayesian Analysis by EJ Wagenmakers for the KLI. You can register here: http://www.kurtlewininstituut.nl/teaching/program/content/?cid=300

On the 30th of March, 2016, I'll teach a workshop on 'Good Statistics' in Tübingen, Germany.

On the 10th of Februari, 2016, I'll be giving a talk at Lancaster, UK.

I'll be moderating a discussion on Bayesian and Frequentist approaches to statistical inferences on the 28th and 29th of January, 2016, in Bielefeld, Germany.

On the 21st of January, I'll be teaching a workshop on High quality PhD Research: Reproducibility, Credibility and Validity (together with Rolf Zwaan). See http://www.educationandlearning.nl/

On the 12th of December, I'll teach a workshop for science journalists on good science journalism. See http://wetenschapsjournalistiek.nl/

I'll give a statistics and methods workshop at the Ludwig-Maximilians-Universität München in Germany on the 5th of November.

I'll give a lecture on Good Research Practices and Open Science at Lund University, Sweden, on the 23rd of October.

I'll give a talk at the Department of Psychological Methods at the University of Amsterdam on Oktober 12th. 

On the 1st of October I'll teach a statistics workshop for research master students at the Radboud University in Nijmegen.

I'll be interviewed by Martijn van Calmthout at the Naturalis After Dark Festival on September 25th. For information, click here.

I'll be presenting at a workshop on Open Data by the Swiss National Science Foundation on the 14th of September. 

Together with Ellen Evers and Uri SImonsohn I'm teaching a KLI course on "Designing studies with high informational value" on September 8th and 9th.

I'm one of the teachers at the in 7th Empirical Methods in Cognitive Linguistics workshop to be held in Joao Pessoa, Brazil, August 2 -9, 2015. For more information, see here.

I gave a keynote lecture at the BSI research day (Radboud University Nijmegen) on Open Science on June 12th. 

I'll be giving a Studium Generale lecture at TU Eindhoven on March 18th, on Science as a Collaborative Enterprise.

I'll be giving talks on how to improve the informational value of studies in Tilburg (TICC, March 4th) and Groningen (March 12th). 

I'll be giving a talk on Open Science in a symposium on Open Access at the TU Eindhoven on March 10th. To register, click here.

I'll be co-teaching a PhD workshop on February 6th and 7th 2015 in Hamburg about new developments and approaches to the theoretical, methodological, and statistical challenges that Social Psychology has faced in the recent past. For information, see here.

On the 8th of January, HTI students chose me as best teacher of a masters course taught by our department last year (I taught Advanced Cognition).

Ionica Smeets and Diederik Jekel chose me as a scientific talent to keep an eye on in 2015 in the Dutch TV show 'Die Komen Eraan 2015' for my contribution on improving science. You can see the interview (in Dutch) here.  

Massimo Pigliucci and Julia Galef from the Rationally Speaking podcast interviewed me about reproducibility in psychology. The episode from 14-12-2014 is available here.

Our research on light from the NWO funded De-escalate project (with Anne Schietecat, Indre Kalinauskite, Antal Haans, Wijnand IJsselsteijn, Yvonne de Kort, and myself) was featured on the Dutch Science program 'De Kennis van Nu' broadcasted on 21-12-2014. 

Scientific theories are not only equally unprovable, and equally improbable, but they are also equally undisprovable.
Lakatos (1973)