Dr  Quentin Gronau

Dr Quentin Gronau

Research Associate

School of Psychological Sciences

Career Summary

Biography

I am a postdoc with Prof. Scott Brown, Prof. Ami Eidels, and Dr. Guy Hawkins in the Newcastle Cognition Lab. I completed my PhD at the Psychological Methods department of the University of Amsterdam (The Netherlands) with Prof. Eric-Jan Wagenmakers where I was part of the JASP team. Subsequently, I did a postdoc with Dr. Dora Matzke (University of Amsterdam), Prof. Andrew Heathcote (University of Amsterdam), and Dr. Mark Hinder (University of Tasmania) before moving to the University of Newcastle. My research interests are mathematical psychology, where computational cognitive models are used to study behaviour and cognition, the theoretical development and practical implementation of Bayesian analyses, with a particular focus on Bayesian model comparison and computational methods for estimating Bayes factors, and open science. My current research focuses, among other topics, on the development of shared mental models for improving the performance of human-bot cybersecurity teams.



Qualifications

  • Doctor of Philosophy, University of Amsterdam - Netherlands

Keywords

  • Bayesian Statistics
  • Mathematical Psychology
  • Open Science

Languages

  • German (Mother)
  • English (Fluent)

Fields of Research

Code Description Percentage
520401 Cognition 20
520105 Psychological methodology, design and analysis 40
520499 Cognitive and computational psychology not elsewhere classified 40

Professional Experience

UON Appointment

Title Organisation / Department
Research Associate University of Newcastle
School of Psychological Sciences
Australia

Academic appointment

Dates Title Organisation / Department
8/4/2022 - 30/6/2023 Research Associate The University of Newcastle
School of Psychology
Australia
1/12/2020 - 31/3/2022 Postdoc University of Amsterdam
Psychological Methods
Netherlands
1/10/2020 - 30/11/2020 Postdoc UTAS
School of Psychological Sciences
Australia

Teaching appointment

Dates Title Organisation / Department
1/9/2020 - 31/3/2022 Teacher University of Amsterdam
Psychological Methods
Netherlands
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (53 outputs)

Year Citation Altmetrics Link
2024 Gronau QF, Hinder MR, Salomoni SE, Matzke D, Heathcote A, 'A unified account of simple and response-selective inhibition.', Cogn Psychol, 149 101628 (2024) [C1]
DOI 10.1016/j.cogpsych.2023.101628
Co-authors Ajheathcote
2024 Gronau QF, Steyvers M, Brown SD, 'How do you know that you don't know?', Cognitive Systems Research, 86 (2024) [C1]

Whenever someone in a team tries to help others, it is crucial that they have some understanding of other team members¿ goals. In modern teams, this applies equally to human and a... [more]

Whenever someone in a team tries to help others, it is crucial that they have some understanding of other team members¿ goals. In modern teams, this applies equally to human and artificial (¿bot¿) assistants. Understanding when one does not know something is crucial for stopping the execution of inappropriate behavior and, ideally, attempting to learn more appropriate actions. From a statistical point of view, this can be translated to assessing whether none of the hypotheses in a considered set is correct. Here we investigate a novel approach for making this assessment based on monitoring the maximum a posteriori probability (MAP) of a set of candidate hypotheses as new observations arrive. Simulation studies suggest that this is a promising approach, however, we also caution that there may be cases where this is more challenging. The problem we study and the solution we propose are general, with applications well beyond human¿bot teaming, including for example the scientific process of theory development.

DOI 10.1016/j.cogsys.2024.101232
Co-authors Scott Brown
2024 Stefan AM, Gronau QF, Wagenmakers E-J, 'Interim design analysis using Bayes factor forecasts.', Psychol Methods, (2024) [C1]
DOI 10.1037/met0000641
2023 Boehm U, Evans NJ, Gronau QF, Matzke D, Wagenmakers E-J, Heathcote AJ, 'Inclusion Bayes Factors for Mixed Hierarchical Diffusion Decision Models', PSYCHOLOGICAL METHODS, [C1]
DOI 10.1037/met0000582
Citations Scopus - 1
Co-authors Ajheathcote
2023 Sarafoglou A, Haaf JM, Ly A, Gronau QF, Wagenmakers E-J, Marsman M, 'Evaluating multinomial order restrictions with bridge sampling.', Psychological Methods, 28 322-338 [C1]
DOI 10.1037/met0000411
2023 Singmann H, Kellen D, Cox GE, Chandramouli SH, Davis-Stober CP, Dunn JC, et al., 'Statistics in the Service of Science: Don t Let the Tail Wag the Dog', Computational Brain & Behavior, 6 64-83 (2023) [C1]
DOI 10.1007/s42113-022-00129-2
2023 Hoogeveen S, Berkhout SW, Gronau QF, Wagenmakers EJ, Haaf JM, 'Improving Statistical Analysis in Team Science: The Case of a Bayesian Multiverse of Many Labs 4', Advances in Methods and Practices in Psychological Science, 6 (2023) [C1]

Team-science projects have become the ¿gold standard¿ for assessing the replicability and variability of key findings in psychological science. However, we believe the typical met... [more]

Team-science projects have become the ¿gold standard¿ for assessing the replicability and variability of key findings in psychological science. However, we believe the typical meta-analytic approach in these projects fails to match the wealth of collected data. Instead, we advocate the use of Bayesian hierarchical modeling for team-science projects, potentially extended in a multiverse analysis. We illustrate this full-scale analysis by applying it to the recently published Many Labs 4 project. This project aimed to replicate the mortality-salience effect¿that being reminded of one¿s own death strengthens the own cultural identity. In a multiverse analysis, we assess the robustness of the results with varying data-inclusion criteria and prior settings. Bayesian model comparison results largely converge to a common conclusion: The data provide evidence against a mortality-salience effect across the majority of our analyses. We issue general recommendations to facilitate full-scale analyses in team-science projects.

DOI 10.1177/25152459231182318
2023 Berkhout SW, Haaf JM, Gronau QF, Heck DW, Wagenmakers E-J, 'A tutorial on Bayesian model-averaged meta-analysis in JASP', Behavior Research Methods, 56 1260-1282
DOI 10.3758/s13428-023-02093-6
2023 Salomoni SE, Gronau QF, Heathcote A, Matzke D, Hinder MR, 'Proactive cues facilitate faster action reprogramming, but not stopping, in a response-selective stop signal task.', Sci Rep, 13 19564 (2023) [C1]
DOI 10.1038/s41598-023-46592-0
Citations Scopus - 1
Co-authors Ajheathcote
2023 van Doorn J, Haaf JM, Stefan AM, Wagenmakers EJ, Cox GE, Davis-Stober CP, et al., 'Bayes Factors for Mixed Models: a Discussion', Computational Brain and Behavior, 6 140-158 (2023) [C1]

van Doorn et al. (2021) outlined various questions that arise when conducting Bayesian model comparison for mixed effects models. Seven response articles offered their own perspec... [more]

van Doorn et al. (2021) outlined various questions that arise when conducting Bayesian model comparison for mixed effects models. Seven response articles offered their own perspective on the preferred setup for mixed model comparison, on the most appropriate specification of prior distributions, and on the desirability of default recommendations. This article presents a round-table discussion that aims to clarify outstanding issues, explore common ground, and outline practical considerations for any researcher wishing to conduct a Bayesian mixed effects model comparison.

DOI 10.1007/s42113-022-00160-3
Citations Scopus - 1
Co-authors Ajheathcote
2023 Gronau QF, Bennett MS, Brown SD, Hawkins GE, Eidels A, 'Do choice tasks and rating scales elicit the same judgments?', Journal of Choice Modelling, 49 100437-100437 (2023) [C1]
DOI 10.1016/j.jocm.2023.100437
Citations Scopus - 1
Co-authors Ami Eidels, Scott Brown, Guy Hawkins
2022 Wagenmakers E-J, Gronau QF, Dablander F, Etz A, 'The Support Interval', Erkenntnis, 87 589-601 (2022) [C1]
DOI 10.1007/s10670-019-00209-z
2022 Dablander F, Huth K, Gronau QF, Etz A, Wagenmakers E, 'A puzzle of proportions: Two popular Bayesian tests can yield dramatically different conclusions', Statistics in Medicine, 41 1319-1333 (2022) [C1]
DOI 10.1002/sim.9278
2022 Stefan AM, Katsimpokis D, Gronau QF, Wagenmakers E-J, 'Expert agreement in prior elicitation and its effects on Bayesian inference', Psychonomic Bulletin & Review, 29 1776-1794 (2022) [C1]
DOI 10.3758/s13423-022-02074-4
2021 Barto F, Gronau QF, Timmers B, Otte WM, Ly A, Wagenmakers E, 'Bayesian model-averaged meta-analysis in medicine', Statistics in Medicine, 40 6743-6761 (2021) [C1]
DOI 10.1002/sim.9170
2021 Vohs KD, Schmeichel BJ, Lohmann S, Gronau QF, Finley AJ, Ainsworth SE, et al., 'A Multisite Preregistered Paradigmatic Test of the Ego-Depletion Effect', Psychological Science, 32 1566-1581 (2021) [C1]
DOI 10.1177/0956797621989733
2021 van Doorn J, van den Bergh D, Böhm U, Dablander F, Derks K, Draws T, et al., 'The JASP guidelines for conducting and reporting a Bayesian analysis', Psychonomic Bulletin & Review, 28 813-826 (2021) [C1]
DOI 10.3758/s13423-020-01798-5
2021 van Doorn J, Wagenmakers E-J, 'Strong Public Claims May not Reflect Researchers' Private Convictions', Significance, 18 44-45 (2021)
DOI 10.1111/1740-9713.01493
2021 Gronau QF, Heck DW, Berkhout SW, Haaf JM, Wagenmakers E-J, 'A Primer on Bayesian Model-Averaged Meta-Analysis', Advances in Methods and Practices in Psychological Science, 4 251524592110312-251524592110312 (2021) [C1]
DOI 10.1177/25152459211031256
2021 Bergh DVD, Clyde MA, Gupta ARKN, de Jong T, Gronau QF, Marsman M, et al., 'A tutorial on Bayesian multi-model linear regression with BAS and JASP', Behavior Research Methods, 53 2351-2371 [C1]
DOI 10.3758/s13428-021-01552-2
2021 Gronau QF, N ARK, Wagenmakers E-J, 'Informed Bayesian Inference for the A/B Test', Journal of Statistical Software, 100 [C1]
DOI 10.18637/jss.v100.i17
2021 Hulme OJ, Wagenmakers E-J, Damkier P, Madelung CF, Siebner HR, Helweg-Larsen J, et al., 'A Bayesian reanalysis of the effects of hydroxychloroquine and azithromycin on viral carriage in patients with COVID-19', PLOS ONE, 16 e0245048-e0245048 [C1]
DOI 10.1371/journal.pone.0245048
2020 Gronau QF, Ly A, Wagenmakers E-J, 'Informed Bayesian
DOI 10.1080/00031305.2018.1562983
2020 van den Bergh D, van Doorn J, Marsman M, Draws T, van Kesteren E-J, Derks K, et al., 'A Tutorial on Conducting and Interpreting a Bayesian ANOVA in JASP', L Année psychologique, Vol. 120 73-96 (2020) [C1]
DOI 10.3917/anpsy1.201.0073
2020 Landy JF, Jia ML, Ding IL, Viganola D, Tierney W, Dreber A, et al., 'Crowdsourcing hypothesis tests: Making transparent how design choices shape research results.', Psychological Bulletin, 146 451-479 [C1]
DOI 10.1037/bul0000220
2020 Hinne M, Gronau QF, van den Bergh D, Wagenmakers E-J, 'A Conceptual Introduction to Bayesian Model Averaging', Advances in Methods and Practices in Psychological Science, 3 200-215 (2020) [C1]
DOI 10.1177/2515245919898657
2020 Ly A, Stefan A, van Doorn J, Dablander F, van den Bergh D, Sarafoglou A, et al., 'The Bayesian Methodology of Sir Harold Jeffreys as a Practical Alternative to the P Value Hypothesis Test', Computational Brain & Behavior, 3 153-161 (2020) [C1]
DOI 10.1007/s42113-019-00070-x
2020 Gronau QF, Lee MD, 'Bayesian Inference for Multidimensional Scaling Representations with Psychologically Interpretable Metrics', Computational Brain & Behavior, 3 322-340 (2020) [C1]
DOI 10.1007/s42113-020-00082-y
2020 Gronau QF, Singmann H, Wagenmakers E-J, 'bridgesampling: An R Package for Estimating Normalizing Constants', Journal of Statistical Software, 92 (2020) [C1]
DOI 10.18637/jss.v092.i10
2020 Gronau QF, Heathcote A, Matzke D, 'Computing Bayes factors for evidence-accumulation models using Warp-III bridge sampling', BEHAVIOR RESEARCH METHODS, 52 918-937 (2020) [C1]
DOI 10.3758/s13428-019-01290-6
Citations Scopus - 12Web of Science - 9
Co-authors Ajheathcote
2019 van Dongen NNN, van Doorn JB, Gronau QF, van Ravenzwaaij D, Hoekstra R, Haucke MN, et al., 'Multiple Perspectives on Inference for Two Simple Statistical Scenarios', American Statistician, 73 328-339 (2019)

When data analysts operate within different statistical frameworks (e.g., frequentist versus Bayesian, emphasis on estimation versus emphasis on testing), how does this impact the... [more]

When data analysts operate within different statistical frameworks (e.g., frequentist versus Bayesian, emphasis on estimation versus emphasis on testing), how does this impact the qualitative conclusions that are drawn for real data? To study this question empirically we selected from the literature two simple scenarios¿involving a comparison of two proportions and a Pearson correlation¿and asked four teams of statisticians to provide a concise analysis and a qualitative interpretation of the outcome. The results showed considerable overall agreement; nevertheless, this agreement did not appear to diminish the intensity of the subsequent debate over which statistical framework is more appropriate to address the questions at hand.

DOI 10.1080/00031305.2019.1565553
Citations Scopus - 26
2019 Gronau QF, Wagenmakers E-J, Heck DW, Matzke D, 'A Simple Method for Comparing Complex Models: Bayesian Model Comparison for Hierarchical Multinomial Processing Tree Models Using Warp-III Bridge Sampling', Psychometrika, 84 261-284 (2019) [C1]
DOI 10.1007/s11336-018-9648-3
2019 Heck DW, Overstall AM, Gronau QF, Wagenmakers E-J, 'Quantifying uncertainty in transdimensional Markov chain Monte Carlo using discrete Markov models', Statistics and Computing, 29 631-643 (2019) [C1]
DOI 10.1007/s11222-018-9828-0
2019 Boffo M, Zerhouni O, Gronau QF, van Beek RJJ, Nikolaou K, Marsman M, Wiers RW, 'Cognitive Bias Modification for Behavior Change in Alcohol and Smoking Addiction: Bayesian Meta-Analysis of Individual Participant Data', Neuropsychology Review, 29 52-78 (2019) [C1]
DOI 10.1007/s11065-018-9386-4
2019 Gronau QF, Wagenmakers E-J, 'Limitations of Bayesian Leave-One-Out Cross-Validation for Model Selection', Computational Brain & Behavior, 2 1-11 (2019) [C1]
DOI 10.1007/s42113-018-0011-7
2019 Gronau QF, Wagenmakers E-J, 'Rejoinder: More Limitations of Bayesian Leave-One-Out Cross-Validation', Computational Brain & Behavior, 2 35-47 (2019) [C1]
DOI 10.1007/s42113-018-0022-4
2019 Stefan AM, Gronau QF, Schönbrodt FD, Wagenmakers E-J, 'A tutorial on Bayes Factor Design Analysis using an informed prior', Behavior Research Methods, 51 1042-1058 (2019) [C1]
DOI 10.3758/s13428-018-01189-8
2019 Love J, Selker R, Marsman M, Jamil T, Dropmann D, Verhagen J, et al., 'JASP: Graphical Statistical Software for Common Statistical Designs', Journal of Statistical Software, 88 1-17 (2019) [C1]
DOI 10.18637/jss.v088.i02
Citations Scopus - 436Web of Science - 275
2018 Wagenmakers E-J, Love J, Marsman M, Jamil T, Ly A, Verhagen J, et al., 'Bayesian inference for psychology. Part II: Example applications with JASP', Psychonomic Bulletin & Review, 25 58-76 (2018) [C1]
DOI 10.3758/s13423-017-1323-7
2018 Wagenmakers E-J, Marsman M, Jamil T, Ly A, Verhagen J, Love J, et al., 'Bayesian inference for psychology. Part I: Theoretical advantages and practical ramifications', Psychonomic Bulletin & Review, 25 35-57 (2018) [C1]
DOI 10.3758/s13423-017-1343-3
2018 Gronau QF, Wagenmakers E-J, 'Bayesian Evidence Accumulation in Experimental Mathematics: A Case Study of Four Irrational Numbers', Experimental Mathematics, 27 277-286 (2018) [C1]
DOI 10.1080/10586458.2016.1256006
2018 Etz A, Gronau QF, Dablander F, Edelsbrunner PA, Baribault B, 'How to become a Bayesian in eight easy steps: An annotated reading list', Psychonomic Bulletin & Review, 25 219-234 (2018)
DOI 10.3758/s13423-017-1317-5
2018 Aczel B, Palfi B, Szollosi A, Kovacs M, Szaszi B, Szecsi P, et al., 'Quantifying Support for the Null Hypothesis in Psychology: An Empirical Investigation', Advances in Methods and Practices in Psychological Science, 1 357-366 (2018) [C1]
DOI 10.1177/2515245918773742
2018 Ly A, Raj A, Etz A, Marsman M, Gronau QF, Wagenmakers E-J, 'Bayesian Reanalyses From Summary Statistics: A Guide for Academic Consumers', Advances in Methods and Practices in Psychological Science, 1 367-374 (2018) [C1]
DOI 10.1177/2515245918779348
2017 Gronau QF, Sarafoglou A, Matzke D, Ly A, Boehm U, Marsman M, et al., 'A tutorial on bridge sampling', Journal of Mathematical Psychology, 81 80-97 (2017) [C1]
DOI 10.1016/j.jmp.2017.09.005
2017 Gronau QF, Duizer M, Bakker M, Wagenmakers E-J, 'Bayesian mixture modeling of significant p values: A meta-analytic method to estimate the degree of contamination from H0.', Journal of Experimental Psychology: General, 146 1223-1233 [C1]
DOI 10.1037/xge0000324
2017 Scheibehenne B, Gronau QF, Jamil T, Wagenmakers E-J, 'Fixed or Random? A Resolution Through Model Averaging: Reply to Carlsson, Schimmack, Williams, and Bürkner (2017)', Psychological Science, 28 1698-1701 (2017)
DOI 10.1177/0956797617724426
2017 Gronau QF, Van Erp S, Heck DW, Cesario J, Jonas KJ, Wagenmakers E-J, 'A Bayesian model-averaged meta-analysis of the power pose effect with informed and default priors: the case of felt power', Comprehensive Results in Social Psychology, 2 123-138 (2017) [C1]
DOI 10.1080/23743603.2017.1326760
2016 Schweinsberg M, Madan N, Vianello M, Sommer SA, Jordan J, Tierney W, et al., 'The pipeline project: Pre-publication independent replications of a single laboratory's research pipeline', Journal of Experimental Social Psychology, 66 55-67 (2016) [C1]
DOI 10.1016/j.jesp.2015.10.001
2016 Wagenmakers E-J, Beek T, Dijkhoff L, Gronau QF, Acosta A, Adams RB, et al., 'Registered Replication Report', Perspectives on Psychological Science, 11 917-928 (2016) [C1]
DOI 10.1177/1745691616674458
2016 Tierney W, Schweinsberg M, Jordan J, Kennedy DM, Qureshi I, Sommer SA, et al., 'Data from a pre-publication independent replication initiative examining ten moral judgement effects', Scientific Data, 3 [C1]
DOI 10.1038/sdata.2016.82
2015 Wagenmakers E-J, Beek TF, Rotteveel M, Gierholz A, Matzke D, Steingroever H, et al., 'Turning the hands of time again: a purely confirmatory replication study and a Bayesian analysis', Frontiers in Psychology, 6
DOI 10.3389/fpsyg.2015.00494
2015 van Elk M, Matzke D, Gronau QF, Guan M, Vandekerckhove J, Wagenmakers E-J, 'Meta-analyses are no substitute for registered replications: a skeptical perspective on religious priming', Frontiers in Psychology, 6
DOI 10.3389/fpsyg.2015.01365
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Conference (1 outputs)

Year Citation Altmetrics Link
2023 Wall L, Gronau Q, Cooper G, Hawkins G, Brown S, Todd J, 'Prediction and learning under unsignalled changing contexts', Prediction and learning under unsignalled changing contexts, Sydney (2023)
Co-authors Scott Brown, Juanita Todd

Thesis / Dissertation (1 outputs)

Year Citation Altmetrics Link
2021 Gronau QF, Bayes Factor Model Comparison for Psychological Science, University of Amsterdam (2021)
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Grants and Funding

Summary

Number of grants 2
Total funding $387,775

Click on a grant title below to expand the full details for that specific grant.


20162 grants / $387,775

MaGW Research Talent$341,470

Funding body: The Netherlands Organisation for Scientific Research (NWO)

Funding body The Netherlands Organisation for Scientific Research (NWO)
Scheme MaGW Research Talent
Role Lead
Funding Start 2016
Funding Finish 2020
GNo
Type Of Funding External
Category EXTE
UON N

Bayesian Evidence Synthesis: New Meta-Analytic Procedures for Measuring, Monitoring, Combining, and Projecting Statistical Evidence$46,305

Funding body: The Berkeley Initiative for Transparency in the Social Sciences (BITSS)

Funding body The Berkeley Initiative for Transparency in the Social Sciences (BITSS)
Project Team

Eric-Jan Wagenmakers, Raoul Grasman, Quentin F. Gronau, and Felix Schönbrodt

Scheme Social Science Meta-Analysis and Research Transparency (SSMART)
Role Investigator
Funding Start 2016
Funding Finish 2017
GNo
Type Of Funding International - Competitive
Category 3IFA
UON N
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Research Supervision

Number of supervisions

Completed4
Current1

Current Supervision

Commenced Level of Study Research Title Program Supervisor Type
2021 PhD First to the Finish Line: Exploring the Stability of Decision-Making Strategies Across Contexts Using the Time Racing Diffusion Model PhD (Psychology - Science), College of Engineering, Science and Environment, The University of Newcastle Co-Supervisor

Past Supervision

Year Level of Study Research Title Program Supervisor Type
2020 Masters PD-1/PD-L1 treatment as an alternative for docetaxel chemotherapy; a Bayesian assessment of the meta-analytic evidence Psychology, University of Amsterdam Sole Supervisor
2020 Masters Developing a Bayesian prior distribution for meta-analyses in social psychology Psychology, University of Amsterdam Sole Supervisor
2019 Masters A Bayesian reanalysis of the Wason Selection Task Psychology, University of Amsterdam Sole Supervisor
2017 Masters Prior elicitation for small to medium effects in psychological science Psychology, University of Amsterdam Co-Supervisor
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Dr Quentin Gronau

Position

Research Associate
School of Psychological Sciences
College of Engineering, Science and Environment

Contact Details

Email quentin.gronau@newcastle.edu.au
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