Beware Stubby Glasses

The New York Times:

If you want to deter crime, it seems that you’d want to lengthen prison sentences so that criminals would face steeper costs for breaking the law. In fact, a mountain of research shows that increases in prison terms have done nothing to deter crime. Criminals, like the rest of us, aren’t much influenced by things they might have to experience far in the future.

Fortunately, people in the behavioral sciences are putting policies to the test. I know of groups at Duke and Penn that are applying behavioral research findings to policy issues. Eldar Shafir of Princeton has edited a weighty new book, “The Behavioral Foundations of Public Policy,” which is a master compendium of what we know.

One of the things we know is that seemingly trivial changes can have big effects. People who are presented with a wide variety of choices of, say, yogurt, will eat more than people who are presented with a small array of choices or no choice. People who were randomly given a short, wide 22-ounce glass, poured 88 percent more juice or soda into it than people who were offered a tall, narrow 22-ounce glass, but they believed they only poured in half as much as they actually did.

Read the whole story: The New York Times

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