There's no industry standard size for food and drink portions, so it's hard to compare a Big Gulp with a McDonald's medium soda. Joe Raedle/Getty Images hide caption

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How Food And Clothing Size Labels Affect What We Eat And What We Wear

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Why Mental Pictures Can Sway Your Moral Judgment

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An incentive system that gave bonuses to teachers upfront, with the threat of having to give the money back if student performance didn't improve, proved effective in one study. David Franklin/iStockphoto.com hide caption

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Do Scores Go Up When Teachers Return Bonuses?

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Five Ways To Spot A Fake Online Review, Restaurant Or Otherwise

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Research suggests basic forms of learning are possible while snoozing. iStockphoto.com hide caption

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Can You Learn While You're Asleep?

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Are Independents Just Partisans In Disguise?

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Megan Lutz, left, and Justin Chun react to amateur comedian Robert Lynch at the Metropolitan Room in Manhattan, N.Y. Lynch is an anthropologist researching what laughing reveals about us. Melanie Burford for NPR hide caption

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An Anthropologist Walks Into A Bar And Asks, 'Why Is This Joke Funny?'

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Who's The Happiest? Researchers studied photos of Olympic medalists to learn who is the happiest. Here, bronze medalist Aliya Mustafina of Russia, gold medalist Gabby Douglas of the U.S., and silver medalist Victoria Komova of Russia pose after the all-around gymnastics final. Julian Finney/Getty Images hide caption

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Would You Rather Win Silver Or Bronze? (Be Careful What You Wish For)

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Can You Help Me Tie My Shoe? Researchers found that when study participants were asked an unusual request, they were more likely later on to perform a favor. iStockphoto.com hide caption

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How To Manipulate People Into Saying 'Yes'

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How Stereotypes Can Drive Women To Quit Science

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Traffic rolls past a speed limit sign in Ohio. Researchers believe they have found a new way to encourage drivers to stay within a safe driving speed: giving them a financial reward that diminishes as they speed. Mark Duncan/AP hide caption

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GPS Study Shows Drivers Will Slow Down, At A Cost

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How The Housing Industry Affects Students' Future

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Parents can make a difference in whether their kids become spenders or savers, studies find. iStockphoto.com hide caption

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Listening To Parents Key To Financial Responsibility

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President Bush and then-Democratic presidential nominee John Kerry shake hands at the end of a presidential debate in 2004 in St. Louis. Researchers want to better understand why partisans' views of the facts change in light of their political loyalties. Charlie Reidel/AP hide caption

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Partisan Psychology: Why Do People Choose Political Loyalties Over Facts?

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