I’m an Assistant Professor in the Social Psychology department of Tilburg University. Here I largely perform research on the topic of false beliefs using experimental techniques, physiological tools, and big data. I also teach courses related to social psychology and supervise students.
|2018-current||Tenure track Assistant Professor in social psychology at Tilburg University|
|2016-2018||Fixed term Assistant Professor in social psychology at Tilburg University|
|2012-2016||Graduate student on the topic of physiological arousal in meaning maintenance|
|2011-2012||Student assistant during my Research Master: Behavioral Science at Nijmegen University|
|2012-2013||Programmer of experimental psychology tasks for FrieslandCampina|
|2007-2010||Media analyst for Report International|
- Brandt, M., Sleegers, W. W. A. (2020) Evaluating belief system networks as a theory of political belief system dynamics. https://psyarxiv.com/b8hfa/
- Jaeger, B., Sleegers, W. W. A. (2020) Racial discrimination in the sharing economy: Evidence from Airbnb markets across the world. https://psyarxiv.com/qusxf
- Evans, A., Sleegers, W., & Mlakar, Ž. (2020). Individual differences in receptivity to scientific bullshit. Judgment and Decision Making, 15(3), 401-412.
- Jaeger, B., Sleegers, W. W. A., & Evans, A. M. (2020). Automated classification of demographics from face images: A tutorial and validation. Social and Personality Psychology Compass, 14(3). https://doi.org/10.1111/spc3.12520
- Sleegers, W. W. A., Proulx, T., & van Beest, I. (2019). Confirmation bias and misconceptions: Pupillometric evidence for a confirmation bias in misconceptions feedback. Biological Psychology, 145, 76–83. https://doi.org/10.1016/j.biopsycho.2019.03.018
- Bender, M., van Osch, Y., Sleegers, W., & Ye, M. (2019). Social support benefits psychological adjustment of international students: Evidence from a meta-analysis. Journal of Cross-Cultural Psychology, 50(7), 827–847. https://doi.org/10.1177/0022022119861151
- Van ‘t Veer, A. E., & Sleegers, W. W. A. (2019). Psychology data from an exploration of the effect of anticipatory stress on disgust vs. Non-disgust related moral judgments. Journal of Open Psychology Data, 7(1), 1. https://doi.org/10.5334/jopd.43
- Jaeger, B., Sleegers, W. W. A., Evans, A. M., Stel, M., & van Beest, I. (2018). The effects of facial attractiveness and trustworthiness in online peer-to-peer markets. Journal of Economic Psychology. https://doi.org/https://doi.org/10.1016/j.joep.2018.11.004
- Proulx, T., Sleegers, W. W. A., & Tritt, S. (2017). The expectancy bias: Expectancy-violating faces evoke earlier pupillary dilation than neutral or negative faces. Journal of Experimental Social Psychology, 70, 69-79. https://doi.org/10.1016/j.jesp.2016.12.003
- Sleegers, W. W. A., Proulx, T., & van Beest, I. (2017). The social pain of Cyberball: Decreased pupillary reactivity to exclusion cues. Journal of Experimental Social Psychology, 69, 187–200. https://doi.org/10.1016/j.jesp.2016.08.004
- Sleegers, W. W. A., Proulx, T., & van Beest, I. (2015). Extremism reduces conflict arousal and increases values affirmation in response to meaning violations. Biological Psychology, 108, 126–131. https://doi.org/10.1016/j.biopsycho.2015.03.012
- Sleegers, W. W. A., & Proulx, T. (2015). The comfort of approach: Self-soothing effects of behavioral approach in response to meaning violations. Frontiers in Psychology, 5, 1–10. https://doi.org/10.3389/fpsyg.2014.01568
- van Beest, I., & Sleegers, W.W.A (2019). Physiostracism: A case for non-invasive measures of arousal in ostracism research. In S. C. Rudert, R. Greifeneder, & K. D. Williams (Eds.), Current directions in ostracism, social exclusion and rejection research. Routledge.
- Sleegers, W. W. A. (2017). Meaning and pupillometry: The role of physiological arousal in meaning maintenance (Doctoral dissertation). Retrieved from https://pure.uvt.nl/portal/en/publications/meaning-and-pupillometry(20680e63-e785-43d0-a3ae-e97b26de5f05).html
- Sleegers, W. W. A. (2018, December). Pupillometry and psychology. Colloquium presentation for the Laboratoire de Psychologie Sociale department at Paris Descartes University.
- Sleegers, W. W. A. (2018, October) tidystats. Colloquium presentation for the Methodology and Statistics department at Leiden University.
- Sleegers, W. W. A. (2018, March) tidystats. Colloquium presentation for the MTO department at Tilburg University.
- Sleegers, W. W. A. (2017, December). Meaning and pupillometry: The role of physiological arousal in meaning maintenance. Presentation at the ASPO conference as part of receiving the best ASPO dissertation award.
- Sleegers, W. W. A. (2017, March). Pupillometry and psychological processes. Colloquium presentation at Cardiff University.
- Sleegers, W. W. A., Proulx, T. & Van Beest, I. (2015, October). Capturing the physiological response to meaning violations: An eye tracker approach. Colloquium presentation at Tilburg University.
- Sleegers, W. W. A. (2019, July) tidystats. Lightning talk at the SIPS conference, Rotterdam, the Netherlands.
- Sleegers, W.W.A. & Jaeger, B. (2019, December) The Social Cost of Correcting Others. Talk at the ASPO conference, Wageningen, the Netherlands.
- Sleegers, W. W. A. (2018, June) tidystats. Lightning talk at the SIPS conference, Grand Rapids, MI.
- Sleegers, W. W. A. (2017, August). oTree for social scientists. Presentation at the TIBER conference, Tilburg, the Netherlands.
- Sleegers, W. W. A., Proulx, T. & Van Beest (2016, December). Evidence of aversive arousal motivating compensatory behavior. Presentation at ASPO conference, Leiden, the Netherlands.
- Proulx, T. & Sleegers, W. W. A. (2014, May). Meaning Maintenance Model: Towards a unified account of threat-compensation behaviors. Presentation at KLI conference, Zeist, the Netherlands.
- Sleegers, W. W. A., Proulx, T., & Van Beest (2014, December). Cyberball and eye tracking: Support for the numbing hypothesis of social exclusion. Presentation at ASPO 2014, Groningen, the Netherlands.
- Sleegers, W. W. A., Proulx, T., & Van Beest (2014, July). Ostracism and eye tracking. Presentation at EASP preconference on threat regulation, Amsterdam, the Netherlands.
- Sleegers, W.W.A. (2019, November) Addressing Incorrect and Incomplete Statistics Reporting (with tidystats). Talk at the meta-research day at Tilburg University, the Netherlands.
- Sleegers, W. W. A. (2017, July). Pupillometry and psychology: Pupillometry as an experimental tool for psychologists. Poster session presented at the Ostracism, Social Exclusion, and Rejection conference, Vitznau, Switzerland.
- Sleegers, W. W. A., Proulx, T., & Van Beest (2016, January). Ostracism and eye tracking: Decreased pupillary reactivity to exclusion cues. Poster session presented at the SPSP conference, San Diego.
- Sleegers, W. W. A., Proulx, T., & Van Beest (2015, December). Meaning and misconceptions: The effect of error feedback and commitment towards misconceptions on pupil size. Poster session presented at ASPO conference, Amsterdam.
- Sleegers, W. W. A., Proulx, T. & Van Beest (2015, March). Cyberball and eye tracking: Support for the numbing hypothesis of social exclusion. Poster session presented at ICPS conference, Amsterdam, the Netherlands.
- Sleegers, W. W. A., Proulx, T, & Van Beest, I. (2014, May). Extremism and the response to meaning threats: Extremism reduces pupillary response to threat and increases affirmation of values. Poster session presented at the KLI conference, Zeist, the Netherlands.
- Sleegers, W. W. A., & Wagemans, F. M. A. (2017, November). The psychology behind eye tracking. Presentation organized by the Academic Forum of Tilburg University.
- Wagemans, F. M. A., & Sleegers, W. W. A. (2017, June). Waar walg jij van? Presentation at Mundial festival on attentional processes and disgust sensitivity using eye tracking.
- Behavioural Processes
- Biological Psychology
- British Journal of Psychology
- British Journal of Social Psychology
- European Journal of Social Psychology
- Group Processes & Intergroup Relations
- International Journal of Psychology
- International Review of Social Psychology
- Journal of Consumer Behaviour
- Journal of Experimental Social Psychology
- Journal of Social and Personal Relationships
- Personality and Social Psychology Bulletin
- PLOS ONE
- Self and Identity
- Social Cognition
- Social Influence
- Social Psychology
Awards are stupid.
|2016-2020||Attitudes and Advertising|
|2019-2020||Understanding Data with R|
|2015/2017/2019||Research Master: Experimental Research and Meta-Analysis|
|2016-2020||Course in R software|
|2019-2020||Understanding Data with R|
|2015-2016||Introduction and History of Psychology|
|2014||Introduction and History of Psychology on intrapersonal conflict|
|2013||Introduction to Social Psychology for prospective students|
|2016-2019||Master in Psychology theses (20 students)|
|2013-2019||Bachelor in Psychology theses (13 students)|
|2012-2018||Research Skills in Psychology (8 groups of students)|
|2016-2019||Attitudes and Advertising|
|2013-2019||An introduction to R; part of the Kurt Lewin Institute course program|
- R: A free software environment for statistical computing and graphics
- SPSS: A proprietary data analysis program
- Python: A cross-platform procedural programming language
- Millisecond’s Inquisit: Stimulus delivery and experimental design software
- oTree: Framework based on Python and Django to create standard and interactive online psychological experiments
- Tobii Studio and Tobii Studio Extensions for E-prime: software to run eye tracker experiments using Tobii eye trackers
- Psychology Software Tool’s E-Prime: Stimulus delivery and experimental design software
- Adobe’s Authorware: Stimulus delivery and experimental design software. This has been discontinued, please do not make me use it
- Neurobehavioural Systems’ Presentation®: A stimulus delivery and experimental control program for neuroscience
I created an R package called tidystats. tidystats can combine the output of statistical models and save them as a simple text file. Too often important statistical results cannot be retrieved from scientific papers, either due to errors in reporting or due to the great hassle of having to extract them from PDFs. tidystats can be used to easily and reliable report statistical results in a manuscript, as well as share them freely with others.
I have my own website at www.willemsleegers.com where I try to write about my research and offer tutorials on various topics related to my research, such how to prepare eye tracker data. These tutorials mostly consist of the statistical programming language R. The website itself is also created in R.
On my Github page I host several repositories of code that can be useful to fellow academics.