Esther Dufflo

Esther Duflo of France, left, receives the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel from King Carl Gustaf of Sweden, during the Nobel Prize award ceremony, at the Stockholm Concert Hall, in Stockholm.

Henrik Montgomery / TT News Agency, Pool via AP

Co-laureates of the 2019 Nobel laureates in economics Abhijit Banerjee and Esther Duflo hold up a signed chair as part of the traditional Nobel Chair Signing ceremony at the Nobel Museum in Stockholm, Sweden.