Robert Lucas (1937–2023)
Play Match The Economist To Their Theory →
Who They Were
Robert Lucas (1937-2023) was an American economist and, for decades, a leading figure at the University of Chicago. He transformed macroeconomics from the 1970s onward by insisting that models of the whole economy be built on explicit microfoundations, accounts of how individual households and firms actually make decisions. He founded the new classical school, which argued that people form expectations using all available information and that markets tend to clear, with far-reaching implications for what policy can achieve. In 1995 he received the Nobel Memorial Prize in Economic Sciences for having developed and applied the hypothesis of rational expectations, thereby transforming macroeconomic analysis and deepening our understanding of economic policy. His work was aimed squarely at the Keynesian models that had dominated the postwar decades, and it reshaped how economists study policy.
Key Contributions
Lucas's central idea, the rational expectations hypothesis, holds that people form expectations using all available information, so systematic and anticipated policy changes have little real effect, a conclusion that challenged the Keynesian case for activist demand management. On this foundation the new classical school built macroeconomics on rational expectations and market clearing, arguing that anticipated policy is neutral and cannot systematically move real output. His related Lucas critique warned that people adapt their behaviour to policy, so a model fitted to past behaviour will mislead once policy changes; reliable analysis therefore requires models grounded in the stable preferences and constraints of individuals. These arguments made microfoundations and expectations central to modern macroeconomics and underlie exam questions about anticipated versus unanticipated policy. He received the Nobel Memorial Prize in 1995 for the rational expectations hypothesis.
On EconRecall
American economist and 1995 Nobel laureate who founded the new classical school on the rational expectations hypothesis. Play the games that feature Robert Lucas: