The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel 1989
Born: 13 December 1911, Skedsmo, Norway
Died: 26 July 1999, Oslo, Norway
Affiliation at the time of the award: University of Oslo, Oslo, Norway
Prize motivation: "for his clarification of the probability theory foundations of econometrics and his analyses of simultaneous economic structures"
Contribution: Pioneering contributions to the foundation of econometrics, i.e., methods used to estimate and test quantitative economic relations.