GS Class of 1989

The Royal Swedish Academy of Sciences announced that Guido W. Imbens ’89 AM, ’91 PhD, a Stanford University economist, is one of three recipients of the 2021 Nobel Prize in Economic Sciences. He and his colleagues were awarded the prize in recognition of their methodological contributions to the analysis of causal relationships. The Academy’s chair noted that “their work has revealed ways in which natural experiments—experiments that divide people into treatment and control groups naturally, without any scientific intervention—can answer important questions for society.”