Brittany and Michael conclude Pioneers in Instrumental Variables series

Guido Imbens once told me that he was inspired to become an econometrician because as a high school student, he read a book about another Dutch economist, Jan Tinbergen. It must therefore have been quite an interesting turn of events that Imbens would one day win the Nobel Prize in economics for a topic that Tinbergen, who had also won the award, had hi…