Ruud Wetzels. Ruud Wetzels Nachtwachtlaan ED, Amsterdam The Netherlands

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1 Ruud Wetzels Ruud Wetzels Nachtwachtlaan ED, Amsterdam The Netherlands Personal Born September 19, 1980, in Heerlen, The Netherlands. Dutch Citizenship. Employment now Senior Manager at PwC. My work is aimed at helping businesses improve by using state-of-the-art data science techniques, focusing on the energyand the financial sector now Member of the advisory board of JASP, an open-source, easy-touse software package. Our main goal is to help statistical practitioners reach maximally informative conclusions with a minimum of fuss. Please see https: //jasp-stats.org/ Postdoctoral researcher at the Informatics Institute of the University of Amsterdam, and at the Spinoza centre for neuroimaging. My work mostly consisted of working at the COMMIT data science project Classification and clustering of persistent traits based on multimodal biomarkers Research Officer Statistics at Eurofound. Eurofound is a tripartite EU agency, it provides expertise on living and working conditions, industrial relations and managing change in Europe. I was involved with managing, designing, tendering, and analysing global survey research projects Graduate student with Eric Jan Wagenmakers. My work consisted of developing Bayesian statistical techniques for applied social scientists, and writing statistical software to ensure that these methods are easy-to-use. Education & Awards 2017 Duncan Luce Outstanding Paper Award for the article A Bayesian hierarchical mixture approach to individual differences: Case studies in selective attention and representation in category learning VVS+OR PhD Thesis award (honorable mention) for my PhD Thesis. The VvS+OR Ph.D. thesis award is an award that is annually bestowed on an excellent Ph.D. in statistics or operations research, obtained at a Dutch university Doctor of Philosophy (Cum Laude), Applied Statistics. Thesis title: Bayesian Model Selection With Applications in Social Science. University of

2 Amsterdam Master of Science (Cum Laude), Statistical Methodology for Social Sciences. Thesis title: Hierarchical Mixture Models of Individual Differences in Category Learning. University of Amsterdam Minor, Mathematics at the University of Amsterdam. Publications According to google.scholar.com at November, 12, 2017, my work has been cited 1,864 times with an h index of 17 and an i10 index of Wetzels R., Scholte, S., Van der Leij, A., & Ghebreab, S. (2017). Separating brain architecture from brain size: A machine learning approach to sexual dimorphism. Manuscript under review. 36. Eigenhuis, A., Wetzels R., & Scholte, S. (2017). Brain correlates for personality traits. Manuscript under review. 35. Wetzels, R. Scholte, S. (2017). On the generalisation of results in mathematical psychology. Manuscript in preparation. 34. Wetzels, R. & Van Houten, G. (2017) Large sample null-hypothesis testing in international survey research. Manuscript in preparation. 33. Steingroever, H., Wetzels, R., & Wagenmakers, E.-J. (2016). Bayes factors for reinforcement-learning models of the Iowa Gambling Task. Decision, 3, Wetzels, R., van Ravenzwaaij, D., & Wagenmakers, E.-J. (2016). Bayesian analysis. In R. Cautin, & S. Lilienfeld (Eds.), The Encyclopedia of Clinical Psychology. Wiley-Blackwell. 31. Wetzels, R., Tutschkow, D., Dolan, C., Dutilh, G., van der Sluis, S., & Wagenmakers, E. J. (2016). A Bayesian Test for the Hot Hand Phenomenon. Journal of Mathematical Psychology, 72, Cramer, A. O. J., van Ravenzwaaij, D., Matzke, D., Steingroever, H., Wetzels, R., Grasman, R. P. P. P., Waldorp, L. J., & Wagenmakers, E.-J. (2016). Hidden multiplicity in multiway ANOVA: Prevalence, consequences, and remedies. Psychonomic Bulletin & Review, 23, Nuijten, M. B., Wetzels, R., Matzke, D., Dolan, C. V., & Wagenmakers, E. J. (2015). A default Bayesian hypothesis test for mediation. Behavior Research Methods, 47, Steingroever, H., Wetzels, R., & Wagenmakers, E.-J. (2015). w=.2, a=.8, c=.6: So what? On the meaning of parameter estimates from reinforcementlearning models. Decision, 2, Steingroever, H., Davis, H., Fridberg, D.J., Horstmann, A., Kjome, K.L., Kumari, V., Lane, S.D., Maia, T.V., McClelland, J.L., Pachur, T., Premkumar, P., Stout, J., Wetzels, R., Wood, S., Worthy, D.A., & Wagenmakers, E.-J. (2015). Data from 617 healthy participants performing the Iowa

3 gambling task: A many labs collaboration. Journal of Open Psychology Data, 3:e Nuijten, M. B., Wetzels, R., Matzke, D., Dolan, C. V., & Wagenmakers, E.-J. (2014). BayesMed: Default Bayesian hypothesis tests for correlation, partial correlation, and mediation. Behavior Research Methods, 47, Steingroever, H., Wetzels, R., & Wagenmakers, E.-J. (2014). Absolute performance of reinforcement-learning models for the Iowa gambling task. Decision, 1, Huizenga, H., van Duijvenvoorde, A., van Ravenzwaaij, D., Wetzels, R., Jansen, B. (2014). Is the unconscious, if it exists, a superior decision maker? Behavioral Brain Sciences, 37, Bartlema, A., Lee, M. D., Wetzels, R., & Vanpaemel, W. (2014). A Bayesian hierarchical mixture approach to individual differences: Case studies in selective attention and representation in category learning. Journal of Mathematical Psychology, 59, Wetzels, R., Parent-Thirion, A., Vermeylen, G., Vargas, O., van Houten, G., Rahm, V., (2013). Occupational Profiles in Working Conditions: Identification of Groups with Multiple Disadvantages. Eurofound Press. 21. Wetzels, R., Aumayr, C. & Vermeylen, G. (2013). Job Quality of Hairdressers. Eurofound Press. 20. Wetzels, R. A User Survey for the fifth European Working Conditions Survey. (2013) Eurofound Press. 19. Steingroever, H., Wetzels, R., & Wagenmakers, E.-J. (2013). Validation of the PVL-Delta model. Frontiers in Decision Neuroscience, 4: Wetzels, R., Lee, M. D., & Wagenmakers, E.-J. (2013). Comparing Gaussian Means. In Lee, M. D., & Wagenmakers, E.-J. (Eds.), Bayesian Cognitive Modeling: A Practical Course, pp Cambridge University Press. 17. Wetzels, R., Lee, M. D., & Wagenmakers, E.-J. (2013). The Generalized Context Model. In Lee, M. D., & Wagenmakers, E.-J. (Eds.). Bayesian Cognitive Modeling: A Practical Course, pp Cambridge University Press. 16. Wetzels, R. (2012). Bayesian Model Selection With Applications in Social Science. 15. Steingroever, H., Wetzels, R., & Wagenmakers, E.-J. (2013). A comparison of reinforcement-learning models for the Iowa gambling task using parameter space partitioning. The Journal of Problem Solving, 5, Article Wagenmakers, E. J., Wetzels, R., Borsboom, D., van der Maas, H. L. J., & Kievit, R.A. (2012). An Agenda for Purely Confirmatory Research. Perspectives on Psychological Science, 7,

4 13. Wetzels, R., & Wagenmakers, E.-J. A default Bayesian hypothesis test for correlations and partial correlations. Psychonomic Bulletin & Review, 19, Steingroever, H., Wetzels, R., Horstmann, A., Neumann, J., & Wagenmakers, E.-J. (2013). Performance of healthy participants on the Iowa gambling task. Psychological Assessment, 25, Dyjas, O., Grasman, R.P.P.P., Wetzels, R., van der Maas, H.L.J. & Wagenmakers, E.-J. (2012). What s in a name: A Bayesian hierarchical analysis of the name letter effect. Frontiers in Quantitative Psychology and Measurement, 3, Wetzels, R., Grasman, R.P.P.P., & Wagenmakers, E.-J. (2012). A default Bayesian hypothesis test for ANOVA designs. The American Statistician, 66, Huizenga, H., Wetzels, R., van Ravenzwaaij, D., & Wagenmakers, E. J. (2012). Four empirical tests of unconscious thought theory. Organizational Behavior and Human Decision Making Processes, 117, Wetzels, R., Matzke, D., Lee, M.D., Rouder, J.N., Iverson, G.J., & Wagenmakers, E.-J. (2011). Statistical evidence in experimental psychology: An empirical comparison using 855 t tests. Perspectives on Psychological Science, 6, Wagenmakers, E.-J., Wetzels, R., Borsboom, D., & van der Maas, H. L. J. (2011). Why psychologists must change the way they analyze their data: The case of psi. Journal of Personality and Social Psychology, 100, Wetzels, R., & Wagenmakers, E. J. (2010). Exemplary introduction to Bayesian statistical inference. Book review of Bayesian Modeling Using WinBUGS (Wiley, 1st ed., 2009). Journal of Mathematical Psychology, 54, Lee, M.D., & Wetzels, R. (2010). Individual differences in attention during category learning. In R. Catrambone, & S. Ohlsson (Eds.), Proceedings of the 32nd Annual Conference of the Cognitive Science Society, Austin, TX: Cognitive Science Society. 4. Wetzels, R., Grasman, R. P. P. P., & Wagenmakers, E.-J. (2010). An encompassing prior generalization of the Savage Dickey density ratio. Computational Statistics and Data Analysis, 54, Wetzels, R., Lee, M. D., & Wagenmakers, E. J. (2010). Bayesian inference using WBDev: A tutorial for social scientists. Behavior Research Methods, 42, Wetzels, R., Vandekerckhove, J., Tuerlinckx, F., & Wagenmakers, E. J. (2010). Bayesian parameter estimation in the Expectancy Valence model of the Iowa gambling task. Journal of Mathematical Psychology, 54, Wetzels, R., Raaijmakers, J. G. W., Jakab, E., & Wagenmakers, E. J. (2009). How to quantify support for and against the null hypothesis: A

5 flexible WinBUGS implementation of a default Bayesian t test. Psychonomic Bulletin & Review, 16, Teaching PwC: Lecturing various programming courses, as well as a two-day program on Big Data in the Business Nyenrode: Lecturer at the Tax Data Science curriculum for the statistics and machine learning elements UvA: Lecturing at a five day workshop for Bayesian Modeling for Cognitive Science UvA: Lecturer for the Research Master course Model Evaluation UvA: Lecturer at the Research Master course Bayesian Modeling UvA: Lecturer for second year course Onderzoekspracticum UvA: Lecturer at the Research Master third year course Calculus UvA: Lecturer at Research Master course Mathematical Statistics UvA: Lecturing at a one day workshop for Bayesian Modeling for Cognitive Science. Other lecturers are Michael Lee and Eric Jan Wagenmakers UvA: Teaching assistant and co-lecturer at the Research Master course Programming in R 2009 UvA: Teaching assistant and co-lecturer for the third year course Mathematical Psychology UvA: Lecturer for the third-year module Modeling. Organizational and Other Academic Activities 2014 Co-maintainer of BayesMed: Default bayesian hypothesis tests for correlation, partial correlation, and mediation. Retrieved from (R package version 1.0.0) Co organizing a five day workshop for Bayesian Modeling for Cognitive Science. Other lecturers are Michael Lee and Eric Jan Wagenmakers now Volunteer for Bits of Freedom, a Dutch digital rights organization focusing on privacy and communications freedom in the digital age.

6 Ambassador for the Research Master Psychology at the University of Amsterdam Member of the organizing committee for the 42nd annual meeting of the Society for Mathematical Psychology, held from August 1st to August 4th, 2009, in Amsterdam, the Netherlands Co organizing a one day workshop for Bayesian Modeling for Cognitive Science. Other lecturers are Michael Lee and Eric Jan Wagenmakers. Professional Memberships The International Society for Bayesian Analysis (ISBA) The Society for Mathematical Psychology (SMP) The Dutch Psychonomic Society (NVP) The Dutch Research School for Psychometrics and Sociometrics (IOPS) Ad hoc reviewing Miscellaneous writing Applied Mathematics, The Journal of Statistical Software, The American Statistician, Journal of Statistical Computation and Simulation, Universitas Psychologica, British Journal of Mathematical and Statistical Psychology, Electronic Journal of Statistics, Statistica Neerlandica, The Journal of Neuroscience, Psychology, and Economics,, Psychological Science, Journal of Mathematical Psychology, American Journal of Sociology, Frontiers Neuroscience, BMC Psychiatry, Journal of Health Psychology, & Information Sciences, Frontiers in Decision Neuroscience, Journal of Statistical Planning and Inference, European Journal of Social Psychology. Maintainer of, and writer for a well-read academic twitter (over 25,000 followers). Author of De kosten en baten van privacybeperking zijn verdacht vaag in Bits of Freedom, Co-author of Dilemma. Wetenschapsbrieven in NRC, 10 Maart, Co-author of Universiteiten en subsidieverstrekkers moeten fraude aanpakken. Opinie in De Volkskrant, 9 September, Co-author of Maatregel om fraude te bemoeilijken brengt enkel voordelen met zich mee. Opinie in De Volkskrant, 16 September, Co-author of Erotische plaatjes. Wetenschapsbijlage van NRC, 12 December, 2010.

7 Co-author of De illusie van efficiëntie. Folia, 1 December, erence, De Nederlandse Vereniging voor Psychonomie, Egmond aan Zee, December 2007.