Free exchange: Natural talent

摘要

FEW ECONOMISTS can claim either to have successfully challenged the bedrock beliefs of their field or to have altered how governments pursue policies that affect millions. Alan Krueger, who died on March 16th, managed both. In research with David Card in the early 1990s, Mr Krueger showed, through careful data analysis, that increases in the minimum wage did not lead to reductions in employment, as standard models suggested they should. The research, which the authors summarised in a seminal book, "Myth and Measurement", published in 1995, drew a scathing initial response. Critics assaulted their motivations, data and analysis until allowing, finally, that the pair had a point. Their work changed economics and politics. It also exemplified Mr Krueger's career as both scholar and public servant.