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In today’s fast paced, technology-saturated world, cell phones have changed daily life in a multitude of ways – and not always for the better. A major concern surrounding mobile phones is the hazard of conversation-engrossed drivers losing focus on the road, potentially contributing to crashes. But while anecdotes of cell phone- distracted drivers aren’t hard to find, an actual scientific measure of how dangerous cell phones are – both hand-held and hands-free – is still a highly controversial topic among researchers, lawmakers and drivers. Li Hsieh, Ph.D., associate professor in the Department of Communication Sciences and Disorders in the College of Liberal Arts and Sciences, is one such researcher working to assess the mechanisms underlying how cell phone conversations affect driver performance, with a specific focus on visual event detection.