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2 Americans win Nobel Prize in economics

Americans Christopher Sims, left, and Thomas Sargent are awarded the Nobel in economics for exploring cause and effect in public policy.

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Americans Christopher Sims, left, and Thomas Sargent are awarded the Nobel in economics for exploring cause and effect in public policy.

Christopher Sims and Thomas Sargent have no simple solutions to the global economic crisis. But the work that won them the Nobel Prize in economics on Monday is guiding central bankers and policymakers in their search for answers.

The two Americans, both 68, were honored for their research in the 1970s and 1980s on the cause-and-effect relationship between the economy and government policy.

Sims is a professor at Princeton University. Sargent teaches at New York University and is a visiting professor at Princeton.

Among their achievements, the two — working separately for the most part over the years — devised tools to analyze how changes in interest rates and taxes affect growth and inflation.

Their work doesn't provide prescriptions for policymakers to solve today's crises. Rather, their achievement has been to create mathematical models that central bankers and other leaders can use to devise policy proposals.

"We're just bookish types that look at numbers and try to figure out what's going on," Sargent said in an interview on the Nobel website.

Sims said he had no sure-fire advice to offer policymakers in the United States and Europe: "If I had a simple answer, I would have been spreading it around the world."

Still, Sims said, "I think the methods that I have used and Tom has developed are central to finding our way out of this mess. … I think they point a way to try to unravel why our serious problems develop, and new research using these methods may help us lead us out of it."

Sargent and Sims have been friends since the 1960s, when both were Harvard graduate students. They later taught at the same time at the University of Minnesota. This semester, they are teaching a graduate-level macroeconomics course together at Princeton.

Their awards, the last of the Nobels announced this year, extend Americans' dominance in the economics category. Thirteen of the 15 most recent winners of the prize in economics have been Americans.

2 Americans win Nobel Prize in economics 10/10/11 [Last modified: Monday, October 10, 2011 11:12pm]

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