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We share this announcement in honour of all economists, with utmost respect for the winners of the 2021 Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel. A decade ago, we had the honour of serving Sweden Embassy of Kuala Lumpur for the Sweden Malaysia Innovation Days exhibition and forum, as well as a Nobel inspired Dinner attended by over 600 dignitaries and VIP guests at the Hilton Sentral Kuala Lumpur. That experience led us to Sweden on a media trip to understand what drives Nordic innovation. After a whirlwind tour visiting Swedish companies like Volvo, Ericsson, BAE Bofors, IKEA, Uppsala University, green city Hamarby Sjostad and Nobel Museum from Stockholm to Goteburg, Karlskoga to Älmhult (Ikea’s founding city), we left truly inspired for many years to come. Jasmine Low, co-founder GIG: gointernationalgroup.com On 11 October 2021 in Oslo, Norway, The Royal Swedish Academy of Sciences awarded the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 2021 with one half to David Card of University of California, Berkeley, USA “for his empirical contributions to labour economics” and the other half jointly to Joshua D. Angrist of Massachusetts Institute of Technology, Cambridge, USA and Guido W. Imbens of Stanford University, USA “for their methodological contributions to the analysis of causal relationships”. Natural experiments help answer important questions for society This year’s Laureates – David Card, Joshua Angrist and Guido Imbens – have provided us with new insights about the labour market and shown what conclusions about cause and effect can be drawn from natural experiments. Their approach has spread to other fields and revolutionised empirical research. Many of the big questions in the social sciences deal with cause and effect. How does immigration affect pay and employment levels? How does a longer education affect someone’s future income? These questions are difficult to answer because we have nothing to use as a comparison. We do not know what would have happened if there had been less immigration or if that person had not continued studying. However, this year’s Laureates have shown that it is possible to answer these and similar questions using natural experiments. The key is to use situations in which chance events or policy changes result in groups of people being treated differently, in a way that resembles clinical trials in medicine. Using natural experiments, David Card has analysed the labour market effects of minimum wages, immigration and education. His studies from the early 1990s challenged conventional wisdom, leading to new analyses and additional insights. The results showed, among other things, that increasing the minimum wage does not necessarily lead to fewer jobs. We now know that the incomes of people who were born in a country can benefit from new immigration, while people who immigrated at an earlier time risk being negatively affected. We have also realised that resources in schools are far more important for students’ future labour market success than was previously thought. Data from a natural experiment are difficult to interpret, however. For example, extending compulsory education by a year for one group of students (but not another) will not affect everyone in that group in the same way. Some students would have kept studying anyway and, for them, the value of education is often not representative of the entire group. So, is it even possible to draw any conclusions about the effect of an extra year in school? In the mid-1990s, Joshua Angrist and Guido Imbens solved this methodological problem, 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,” says Peter Fredriksson, chair of the Economic Sciences Prize Committee. Illustrations ”© Johan Jarnestad/The Royal Swedish Academy of Sciences” Illustration: Association between education and income (pdf)Illustration: Years of education (pdf)Illustration: Effect of increasing the minimum wage (pdf)Illustration: Local average treatment effect (pdf) Read more about this year’s prize Popular science background: Natural experiments help answer important questions (pdf)Scientific Background: Answering causal questions using observational data (pdf) David Card, born 1956 in Guelph, Canada. Ph.D. 1983 from PrincetonUniversity, USA. Class of 1950 Professor of Economics, University ofCalifornia, Berkeley, USA. Joshua D. Angrist, born 1960 in Columbus, Ohio, USA. Ph.D. 1989 fromPrinceton University, USA. Ford Professor of Economics, MassachusettsInstitute of Technology, Cambridge, USA. Guido W. Imbens, born 1963 in Netherlands. Ph.D. 1991 fromBrown University, Providence, USA. The Applied Econometrics Professorand Professor of Economics, Stanford University, USA. Prize amount: 10 million Swedish kronor, with one half to David Card and the other half jointly to Joshua Angrist and Guido Imbens.Further information: www.kva.se and www.nobelprize.org The Royal Swedish Academy of Sciences, founded in 1739, is an independent organisation whose overall objective is to promote the sciences and strengthen their influence in society. The Academy takes special responsibility for the natural sciences and mathematics, but endeavours to promote the exchange of ideas between various disciplines. Nobel Prize® is a registered trademark of the Nobel Foundation. Citation MLA style: Press release: The Prize in Economic Sciences 2021. NobelPrize.org. Nobel Prize Outreach AB 2021. Tue. 12 Oct 2021.