Jelte Wicherts

Professor
Scientific practices and methods to identify their weak spots in order to strengthen science.

Email - Website - Twitter

Marcel van Assen

Professor
Statistical methods to combine studies, publication bias, QRPs, fraud, reproducibility, improving pre-registration & registered reports.
Email - Website - Twitter

Marjan Wit.jpg — Marjan Bakker

Assistant Professor
Improving science by investigating problems and possible solutions. Bias, QRPs, power, preregistration.

Email - Website

Michèle Nuijten

Assistant Professor

Improving psychology via empirical research. Bias, errors, reproducibility, & replication. Developer of statcheck: “spellchecker for statistics”.

Email - Website - Twitter

Xavier Salet

PhD Student
Quality assurance in qualitative socio-cultural research. Debates on its form, effectivity, and desirability.

Email - Website

Cas Goos

PhD Student
Investigating and enhancing the various interventions for improving scientific robustness at the journal level.
Email - Website

Anouk Bouma

PhD Student
Trustworthiness of Monte Carlo simulations from a meta-research perspective.

Email - Website

Jennifer Chen

PhD Student
Guidelines for mixed-methods approaches, and topics of effective knowledge dissemination.

Email

Olmo van den Akker

Postdoc

Systematic review of studies simulating p-hacking.

Email - Website - X

Robbie van Aert

Assistant Professor

Meta-analysis, publication bias methods, assessing replicability of research. Developer of the publication bias method p-uniform.

Email - Website

Tamarinde Haven

Assistant Professor

Research integrity, responsible supervision, qualitative research, mixed methods, open science, reproducibility.

Email - Website

Franziska Rüffer

PhD Student
Meta-analysis, Bayesian statistics, assessing the impact of and accounting for measurement error, survival and longitudinal data analysis.
Email - Website

Tsz Keung Wong

PhD Student
Modelling multiverses and correcting for p-hacking, improving the use of Bayes Factor and statistical tests
Email - Website

Iris Willigers

PhD Student
Psychometric scaling problems and measurement invariance as sources for the variation in causal effects in psychology.
Email - Website

Caspar van Lis

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Associate Professor

Developing machine learning methods for research synthesis , like MetaForest, penalized meta-regression, and text mining
systematic review.

Email - Website - Mastodon

Rasoul
Norouzi

PhD Student
Using natural language processing and graph neural networks to create directed acyclic graphs of social science papers and reason over them.
Email - Website

Dennis Peng

PhD Student
Statistical validity and variability in psychological intervention studies.

Email - Website

Tijn van Hoesel

PhD Student
Investigating the impact of spin and other reporting practices in scientific research.

Email - Website

Ben Kretzler

PhD Student
Current scientific practices in testing for heterogeneity; tests for heterogeneous effects; effect sizes of causal effect heterogeneity.
Email

Former Team Members

Esther Maassen

PhD Student (2018 - 2026)

IMG_0014+Edited.jpg — Amir M. Abdol

Post-Doc (2017 - 2021)

Website

Hilde Augusteijn

PhD student (2015 - 2022)

Website

Chris Hartgerink

PhD student (2014 - 2018)

Website

Melissa de Smet

Assistant Professor (2022-2025)

Website

Andrea Stoevenbelt

PhD student (2017 - 2022)

Website

Paulette Flore

PhD student (2013 - 2017)
Lecturer/Researcher (2017 - 2020)
Website

Coosje Veldkamp

PhD student (2012 - 2017)
Website

Anton Olsson Collentine

PhD Student (2019 - 2024)

Website

20140924_143755%5b1%5d.jpeg — Richard Klein

Post-Doc (2019 - 2022)

Website

receptie hoofd.jpg — Leonie van Grootel

Lecturer/Researcher (2018 - 2020)

Website