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Kimberly Fenn

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Small sack of coffee (Getty Images/A. Martin UW Photography)

Can coffee or a nap make up for sleep deprivation? No — a psychologist explains why

Kimberly Fenn
(<a href='http://www.shutterstock.com/gallery-123808p1.html'>Phase4Photography</a> via <a href='http://www.shutterstock.com/'>Shutterstock</a>)

Feeling sleepy? You might be at risk of falsely confessing to a crime you did not commit

Shari Berkowitz, Elizabeth Loftus, Kimberly Fenn, Steven Frenda