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Jack Dempsey, PhD
Data Scientist – Research Executive – Cognitive Psychologist

I work as Vice President of Research at Cascade Reading, where I direct the research agenda to improve literacy outcomes for all readers using scientifically-informed strategies and experimental research methdologies to aid product development.

At the heart of my work is a passion for quantitative solutions to real world problems. I have extensive experience since 2016 applying advanced statistical techniques and machine learning algorithms (e.g., Bayesian hierarchical modeling, power analyses, factor analyses, principal component analysis, random forests/support vector machines, etc.). I’ve used these skills in experimental settings to publish scientific articles in the fields of psycholinguistic, education, and reading, and for the past four years I’ve used these abilities to drive the research agenda and evidence-based product development at a startup learning technology company. Knowing how to gain insights from data and effectively communicate those insights to a variety of audiences, from C-Suite to general public, continues to be more and more valuable.

In my spare time, I sometimes teach a course on developmental linguistics at the University of Illinois at Urbana-Champaign and participate in academic research and consulting. I also practice piano, study world languages, and dabble in mixology.

Representative Work:

Dempsey, J., Tsiola, A., Bosch, N., Christianson, K., & Stites, M. (2025). Eye-movement indices of reading while debugging Python source code. Journal of Cognitive Psychology37(2), 89-107. Read here.

Dempsey, J. & Christianson, K. (2022). Referencing context in sentence processing: A failure to replicate the strong interactive mental models hypothesis. Journal of Memory and Language, 125, 104335. Read here.

Dempsey, J., Liu, Q., & Christianson, K. (2020). Convergent probabilistic cues do not trigger syntactic adaptation: Evidence from self-paced reading. Journal of Experimental Psychology: Learning, Memory, and Cognition, 46(10), 1906-1921. Read here.