J.G. Schaaij MSc (Jedidjah)

I am Jedidjah Schaaij, a psychology PhD candidate. After my 'positive psychology and technology master' at the UT I wanted to do more research with a societal impact.

I am a psychologist and researcher interested in how people communicate and behave in high-stakes situations. My work focuses on crisis negotiation, victim perspectives, and the interpersonal dynamics that shape outcomes in real-world policing contexts. I am particularly drawn to questions that sit at the intersection of psychology, criminology, and applied practice.

This interest led me to a PhD at the University of Twente’s Psychology of Conflict, Risk and Safety group, where I study crisis negotiation in close collaboration with Dutch police practitioners. The aim of my work is to strengthen evidence-based policing by developing the data infrastructure needed to systematically study complex field practice.

I value research that is rigorous, useful, and closely connected to the realities it seeks to understand. My working style is observant and structured, with a strong focus on translating complex field data into actionable insight and narrowing the gap between research and practice.

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Courses academic year 2026/2027

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2025/2026

Courses academic year 2024/2025

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