NOT long ago, the starting assumption of any economic theory was that humans are rational actors who maximise their utility. Economists summarily dismissed anyone insisting otherwise. But over the past few decades, behavioural economists like Richard Thaler have progressively chipped away at this notion. They combine economics with insights from psychology to show how heavily economic decisions are influenced by cognitive biases. On September 9th Mr Thaler’s work was recognised at the highest level when the Nobel Committee awarded him this year’s prize in economics. Mr Thaler thus becomes one of very few behavioural economists to win the prize.
Mr Thaler’s has been a prolific career, spanning over four decades, the last two of them at the University of Chicago’s Booth School of Business. His research has touched on subjects as varied as asset prices, personal savings and property crime. For example, Mr Thaler developed a theory of mental accounting, which explains how people making financial decisions look only at the narrow...Continue reading