04/25/2014 12:20 pm ET Updated Apr 25, 2014

8 Retirement Questions For 50-Something Couples

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As an economist, MIT prof James Poterba can run a regression analysis and assume a can opener (see footnote 1 below) with the best of them. After all, he is president of the National Bureau of Economic Research, the wonky organization that officially determines when U.S. recessions start and end. But Poterba, who has studied savings behavior and retirement for decades, also has a knack for turning what economists know (and don’t know) into insight for the rest of us.

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