Docu
Op 21 januari 2020 sprak ik mijn oratie uit getiteld ‘Machines vervangen Wetenschappers’. Op deze website kun je de allerlei filmpjes vinden: een samenvatting van de oratie (zelfs mijn kinderen zitten goed op te letten!), de volledige versie,
Symposium at M3 conference accepted
Bayes is growing in all disciplines! This is one of the results found by van de Schoot, Winter, Ryan, Zondervan-Zwijnenburg and Depaoli (in press) in an extensive systematic review.
Presentation about GRoLTS-Checklist
At the Meeting of the Working Group SEM (16 and 17 March 2017; Ghent, Belgium) I will present about the Guidelines for Reporting on Latent Trajectory Studies. March 16 at 14:15-14:45 Abstract: Estimating models within the mixture model framework, like Latent Growth Mixture Modeling (LGMM) or Latent Class…
Measurement Invariance
To assess the presence of abstract concepts in people, like prolonged grief disorder, peritraumatic dissociation and students’ motivation, surveys can be used. When concepts are operationalized by means of questions or “items”, they are called “latent variables”.
APS symposium accepted: “Experts and Animals: How Can They Help Us?”
How and to what extend can we use the unique information derived from experts and animals? We discuss how expert opinions can be formalized and included in analyses, how animal studies can provide insight into human behavior, and ways to compare results from these sources…
Beyond Null Hypthesis Testing
Many researchers have no particular interest in a null hypothesis assuming that “nothing is going on”, so why test it at all? Evaluating specific, directional expectations produces more insightful results than sequentially testing traditional null hypotheses against catch-all rivals.
Expert Data (Dis)agreement
Elicitation is the process of extracting knowledge about the parameters in the statistical model. This information can then be used to provide input for the prior distribution needed for Bayesian analysis. Several methods of prior elicitation are used in practice including the use of experts.
The Very First Female Inaugural Address at Utrecht University and the Most Recent One
Another Friday, another episode of the Deep-Thinking-project. Today it is exactly 100 years ago, that the very first female inaugural address was given by Johanna Westerdijk at Utrecht University. Back then a female professor was rare, but also today it is not so common as…
Answering Big Questions with Small Samples
Another Friday, another episode of the Deep-Thinking-project. Last weekend I was interviewed by a Dutch Newspaper (Financieel Dagblad) about my work as a statistical consultant and how I deal with limited data sets as opposed to Big Data. My answer was that if you suffer…
Sign up for the 8th Mplus User Meeting
Do you use daily diaries, ecological momentary assessments (EMA), experience sampling methodology (ESM), or other ambulatory assessments in your research? Are you curious about what these data can tell you about the dynamics of processes? DSEM consists of cutting-edge techniques including time series analysis and dynamic…
Deep-thinking project postponed
Another Friday, the sun is shining, it’s a perfect day for Deep-Thinking. My previous experiment did not really work out well: hanging on one hand appeared not to be the best thinking position. Today I face another problem: Before I can actually start thinking, there…
Finding the best thinking-position
This is the first day of my experiment to go back to the roots of science. Instead of running around trying to publish as many papers as possible I announced earlier that I would stop, sit and think more often. But it appeared not to…