Webinar: Kansen en dilemma’s online proctoring na corona
Op vrijdag 26 maart organiseerde de Vraagbaak Online Onderwijs met de SURF Special Interest Group (SIG) Digitaal toetsen en de Werkgroep Toetsen op afstand het webinar…
I’m a psychometrician, statistician, and educational innovator based in Amsterdam. I’m co-director of the Teaching & Learning Centre at the Faculty of Social and Behavioural Sciences at the University of Amsterdam, where I teach statistical reasoning and conduct research in psychometrics, computer adaptive testing, and the integration of digital assessment with learning. I also lead the university’s involvement in national initiatives to modernize digital assessment practices. As lead for research universities in the Npuls Digital Testing & Development division, I work with colleagues across the Dutch education sector to support secure, reliable, and pedagogically sound digital assessment processes and help institutions develop a clear vision for assessment in the digital age.
Interests
- Digital Assessment
- Adaptive Testing
- Psychometrics
- Higher Education
- EdTech
- Educational Leadership
- Data Science
- Learning Analytics
- Blended Learning
- Statistics Education
Research
Computer adaptive practice of Maths ability using a new item response model for on the fly ability and difficulty estimation
In this paper we present a model for computerized adaptive practice and monitoring. This model is used in the Maths Garden, a web-based monitoring system, which includes a challenging web environment for children to practice arithmetic. Using a new item response model based on the Elo (1978) rating system and an explicit scoring rule, estimates of the ability of persons and the difficulty of items are updated with every answered item, allowing for on the fly item calibration…
Talks
Blog posts
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