Kahneman is an author and emeritus professor of behavioral psychology at Princeton who shared the Nobel Memorial Prize in Economics in 2002 for his work on prospect theory, which explores how people make decisions under conditions of uncertainty. A Tel Aviv native, he lived in Paris as a boy and survived the Nazi occupation of France before his family returned to the Land of Israel in 1946. He began to develop his theories while assessing officer candidates in the IDF in the 1950s.