Nobel Prize in economics awarded to David Card, Joshua Angrist and Guido Imbens

Nobel Prize in economics awarded to David Card, Joshua Angrist and Guido Imbens

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Nobel Prize in economics awarded to David Card, Joshua Angrist and Guido Imbens

Information about Nobel Prize in economics awarded to David Card, Joshua Angrist and Guido Imbens

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David Card was recognized by the Royal Swedish Academy of Sciences for groundbreaking work on minimum wages, immigration and education. He showed, using a natural experiment — where researchers study situations as they unfold in the real world — that increasing the minimum wage does not necessarily lead to fewer jobs.

The other half of the prize was awarded to Joshua Angrist and Guido Imbens for demonstrating how precise conclusions about cause and effect can be drawn from natural experiments.

“Card’s studies of core questions for society and Angrist and Imbens’ methodological contributions have shown that natural experiments are a rich source of knowledge. Their research has substantially improved our ability to answer key causal questions, which has been of great benefit to society,” Peter Fredriksson, chair of the Economic Sciences Prize Committee, said in a statement.

Card was born in Guelph, Canada and is a professor at the University of California, Berkeley. Angrist is a professor at the Massachusetts Institute of Technology. Imbens was born in Eindhoven, Netherlands and is a professor at Stanford University in California.

The Royal Swedish Academy of Sciences said that Card’s studies from the early 1990s “challenged conventional wisdom.” By comparing what happened when New Jersey hiked its minimum wage to labor market conditions in neighboring Pennsylvania, he was able to upend the accepted theory that increasing the minimum wage would lead to fewer jobs.

Researchers have much less control in a natural experiment. In a clinical trial, scientists decide who receives a treatment or intervention and who does not, but in a natural experiment, they do not have control over which individuals are in a treatment or control group. Card, for example, compared fast food workers who happened to live in Pennsylvania to those in New Jersey.

Nobel Prize in economics awarded to trio for work on poverty. One is the youngest winner ever

Angrist and Imbens helped advance the use of natural studies by showing what conclusions about causation can be drawn from them.

“The framework they created has radically changed how researchers approach empirical questions using data from natural experiments or randomized field experiments,” the Royal Swedish Academy of Sciences said.

The prize, officially known as the Sveriges Riksbank Prize in Economic Sciences, was not instituted by Alfred Nobel. It was established by Sweden’s central bank and is awarded in memory of Nobel. Card will receive one half of the 10 million Swedish kronor ($1.1 million) prize. The remaining prize money will be split between Angrist and Imbens.

Card said Monday that he thought he was the victim of a practical joke.

“The message said the call was coming from Sweden,” he said just after winning the award. “I have a couple of friends who would pull a stunt like that.”

Card said his work was mostly about “trying to get more scientific tie-in and evidence-based analysis in economics.”

“Most old fashioned economists are very theoretical, but these days, a large fraction of economics is really very nuts-and-bolts, looking at subjects like education or health, or at the effects of immigration or the effects of wage policies,” he said.

American economists Paul Milgrom and Robert Wilson were awarded last year’s economics prize for their work on auction theory. The Stanford University professors were recognized for theoretical discoveries that improved how auctions work and made it easier to allocate scarce resources.
Abhijit Banerjee, Esther Duflo and Michael Kremer received the 2019 Nobel for pioneering an approach to poverty reduction. Duflo was the second woman to be awarded the prize, which has been given out since 1969.

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