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As Congress Weighs the Future of Daylight Saving Time, a UMW Sleep Researcher Explains What Your Body Actually Goes Through
The House passed the Sunshine Protection Act on July 14, 2026, reviving the national debate over whether the U.S. should adopt permanent daylight saving time, return to permanent standard time, or keep the twice-yearly clock change altogether. The bill now heads to the Senate. At the University of Mary Washington, Dr. Hilary Stebbins, Associate Professor of Psychological Science, studies the chronobiology and sleep patterns of college students, research that can help inform exactly this debate: how does shifting the clock affect cognitive performance and behavior, no matter which system we land on? Dr. Hilary Stebbins is an Associate Professor in the Department of Psychological Science at the University of Mary Washington. She is an expert on sleep deprivation, circadian rhythms, and dopamine function, and how each affects cognitive performance and behavior. View her profile Stebbins doesn't take a side in the policy debate. Her focus is chronobiology, how sleep patterns and circadian rhythms affect college students' cognitive performance and behavior. But that science speaks directly to the choice lawmakers are weighing: any shift, whether it's permanent daylight saving time, permanent standard time, or sticking with the current system, creates a temporary mismatch between our internal clock and the outside world, and it takes the body time to catch up. "One of my past teams found that as people report higher levels of sleepiness, they show higher dopamine function and also have more difficulty controlling impulsive actions." — Dr. Hilary Stebbins, Associate Professor of Psychological Science, University of Mary Washington Stebbins leads a year-long undergraduate research team (PSYC 491/492) each year, and in 2018 a team of her students won the Virginia Association for Psychological Science's award for best undergraduate paper for their research on sleep deprivation. Interested in discussing chronobiology, sleep patterns, or the science behind the debate over permanent daylight saving time, permanent standard time, or dopamine and behavior? Connect with Dr. Hilary Stebbins, Associate Professor of Psychological Science at the University of Mary Washington, for expert insight into sleep research and its real-world stakes. Click on the link here.
