Economists win Nobel for contract theory
Competitive field
Mr Holmstrom, aged 67, is a professor of economics and management at Massachusetts Institute of Technology, while Mr Hart, born in 1948, is an economics professor at Harvard University in the US. The pair saw off competition from the World Bank's new chief economist Paul Romer, who was widely tipped to win.
New York University's Stern Business School, where Prof Romer teaches, sparked controversy last Thursday when it accidently published a press release naming him as the winner.
It quickly took down the release, saying it was only preparing for a possible win. Others believed to be the running included Olivier Blanchard, a former chief economist at the International Monetary Fund, and Edward Lazear, a fellow at the Hoover Institution, Stanford University.
Americans dominate
The economics prize is the only Nobel not created by Alfred Nobel, and was instead launched in 1968, long after the philanthropist's death. To date Americans have dominated the award, with 55 of the 76 laureates holding US citizenship, including those with dual nationalities. Last year Scottish-born economist Angus Deaton won the prize for his use of data to investigate income inequality and inform economic policy. It is the fifth Nobel to be announced this year, after prizes for physiology or medicine, physics, chemistry and peace were awarded last week. The Nobel prize for literature will be awarded on Thursday.
Previous winners of the Nobel prize for economics:
• 2015: Angus Deaton (Britain-US)
• 2014: Jean Tirole (France)
• 2013: Eugene Fama, Lars Peter Hansen and Robert Shiller (US)
• 2012: Alvin Roth and Lloyd Shapley (US)
• 2011: Thomas Sargent and Christopher Sims (US)
• 2010: Peter Diamond and Dale Mortensen (US) and Christopher Pissarides (Cyprus-Britain)
• 2009: Elinor Ostrom and Oliver Williamson (US)
• 2008: Paul Krugman (US)
• 2007: Leonid Hurwicz, Eric Maskin and Roger Myerson (US)