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Roman Janssen


Ph.D Student

Paris Cité University

Roman joined the LaPsyDÉ in 2023 to do a PhD under the supervision of Elise Klein and André Knops. His research focuses on how language influences the way we think about and children learn about numbers and mathematics.
He completed his Master's degree at the University of Tübingen in 2022.
Before joining the LaPsyDÉ, Roman has been working as a backend software developer and also as a researcher at the IWM in Tübingen (Germany) and the University of Innsbruck (Austria).
Roman has great research interests in statistical analyses, neuroimaging, psychometrics, human decision making under uncertainty and computational modeling to understand human cognition.


Jung, S., Janssen, R. J., & Klein, E. (2022). Laterality in simple multiplication: Assessing hemispheric specialization of arithmetic fact retrieval in a visual hemifield paradigm. Journal of Experimental Psychology: Human Perception and Performance, 48(4), 351–369.

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