ISU researchers measure fatigue in suspect confessions, statements to police

By: Brooklyn Draisey

Outlets: Iowa Capital Dispatch

Published: March 27, 2026

Words: 885

Last Updated: 4 months ago

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Iowa State University researchers are hoping to establish a foundation for further consideration of sleep and the lack of it when it comes to justice system proceedings, from suspect interrogations and confessions to, eventually, jury considerations.

Zlatan Krizan, a professor of psychology at ISU, and social psychology doctoral student Breanna Curran, co-authored a research synthesis into how interrupted sleep and continued wakefulness fit into the legal system. They developed guidelines that could work as a …

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