3 US-based economists win Nobel for research on wages, jobs

STOCKHOLM — A U.S.-based economist won the Nobel prize in economics Monday for pioneering research that transformed widely held ideas about the labor force, showing how an increase in the minimum wage doesn’t hinder hiring and immigrants don’t lower pay for native-born workers. Two others shared the award for developing ways to study these types of societal issues.

Canadian-born David Card of the University of California, Berkeley, was awarded half of the prize for his research on how the minimum wage, immigration and education affect the labor market.

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The other half was shared by Joshua Angrist of the Massachusetts Institute of Technology and Dutch-born Guido Imbens of Stanford University for their framework for studying issues that can’t rely on traditional scientific methods.

The Royal Swedish Academy of Sciences said the three “completely reshaped empirical work in the economic sciences.”

Together, they helped rapidly expand the use of “natural experiments,” or studies based on observing real-world data. Such research made economics more applicable to everyday life, provided policymakers with actual evidence on the outcomes of policies, and in time spawned a more popular approach to economics epitomized by the blockbuster bestseller “Freakonomics,” by Stephen Dubner and Steven Levitt.

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In a study published in 1993, Card looked at what happened to jobs at Burger King, KFC, Wendy’s and Roy Rogers when New Jersey raised its minimum wage from $4.25 to $5.05, using restaurants in bordering eastern Pennsylvania as the control — or comparison — group. Contrary to previous studies, he and his late research partner Alan Krueger found that an increase in the minimum wage had no effect on the number of employees.

Card and Krueger’s research fundamentally altered economists’ views of such policies. As noted by the Economist magazine, in 1992 a survey of the American Economic Association’s members found that 79% agreed that a minimum wage law increased unemployment among younger and lower-skilled workers. Those views were largely based on traditional economic notions of supply and demand: If you raise the price of something, you get less of it.

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