Julian Quandt

PhD student

Behavioural Science Institute, Radboud University


A PhD student in the Behaviour Regulation and Change (BRACE) Lab at the Behavioural Science Institute at Radboud University in Nijmegen working with Harm Veling (main advisor/co-promotor) , Rob Holland (promotor) , and Bernd Figner (co-promotor) .

In my PhD project, I aim to increase our understanding confidence in value-based decision-making. The questions that keep me awake at night are:

  • How do people retrieve value-information when they make a decision?
  • How does this retrieval of information relate to people’s confidence in their decisions? This is, what does high or low confidence in VBD reflect?
  • Why are people confident about some choices while they are uncertain of others?

Aside from working on my dissertation, I also enjoy working on my skills in statistics, statistical modelling and programming (R and python). Moreover, I am an enthusiast of open science, open access, open source and open bars.


  • Social, Experimental and Cognitive Psychology
  • (Bayesian) Statistics
  • Research Methods
  • Open Science


  • MSc in Behavioural Science, 2017

    Radboud University

  • BSc in Psychology, 2014

    Radboud University

Recent Posts

Power Analysis by Data Simulation in R - Part IV

This final part extends the previous part by generalizing data simulation linear mixed-effects models.

Power Analysis by Data Simulation in R - Part III

This part extends the previous part by generalizing data simulation to ANOVA and general linear model designs.

Power Analysis by Data Simulation in R - Part II

This part foucuses on simple scenarios (t-tests) to introduce the simulation of correlated measurements and multivariate …

Power Analysis by Data Simulation in R - Part I

This part provides an introduction, some background on power-calculation and data-simulation.

Recent & Upcoming Talks

Confidence in Values and Value-based Choice @ ASPO 2019

When people make decisions in everyday-life, these decisions are usually accompanied by a feeling of confidence whether the choice that …

Extending the Statistical Toolbox @ BSI PhD-Day 2019

What we often forget when making use of statistics in our daily research practice is that statistics itself is a rapidly developing …

Introduction to `brms` @ SIPS 2019

In statistics classes, students often learn a zoo of different models, without grasping how those all link together. In consequence, …

Other Resources

This is a list of other resources I find useful:

  • R-Bloggers : A neat website compiling all kinds of useful R-related stuff.