Olivier Jean Blanchard (; born December 27, 1948) is a French economist and professor who is a senior fellow at the Peterson Institute for International Economics. He was the chief economist at the International Monetary Fund from September 1, 2008, to September 8, 2015. Blanchard was appointed to the position under the tenure of Dominique Strauss-Kahn; he was succeeded by Maurice Obstfeld. He is also a Robert M. Solow Professor of Economics emeritus at the Massachusetts Institute of Technology (MIT). According to IDEAS/RePEc, he is one of the most cited economists in the world. Career Blanchard graduated from ESCP in 1970. From 1970 to 1973, he completed graduate level courses in economics and applied mathematics at Paris Dauphine University and Paris Nanterre University. He obtained a PhD in economics from MIT in 1977 and then taught at Harvard University between 1977 and 1983, after which time he returned to MIT as a professor. His areas of expertise in macroeconomics are the functions of monetary policy, the role of speculative bubbles, the determinants of unemployment and the role of the labor market as a whole, the effects on countries who have transitioned away from communism, and the factors that have sparked the most recent global financial crises. Between 1998 and 2003 Blanchard served as the chairman of the economics department at MIT. Blanchard has published numerous research papers in the field of macroeconomics, as well as undergraduate and graduate macroeconomics textbooks. In 1987, together with Nobuhiro Kiyotaki, Blanchard demonstrated the importance of monopolistic competition for the aggregate demand multiplier. Most New Keynesian macroeconomic models now assume monopolistic competition for the reasons outlined by them. He is a fellow and past Council member of the Econometric Society, and a member of the American Academy of Arts and Sciences. International Monetary Fund During his tenure as chief economist, Blanchard's reshaped IMF policies. During the Great Recession Blanchard supported global fiscal stimulus. During its slow recovery he urged a cautious removal of stimulus and advocated quantitative easing. Austerity v. stimulus debate By 2010, following the financial crisis, many countries ran significant budget deficits. There was a global turn to austerity as Washington Consensus economists encouraged governments to cut spending and raise taxes to avoid a government debt crisis, as occurred in Greece. In June 2010, Blanchard and Carlo Cottarelli, the director of the IMF's fiscal affairs department, co-authored an IMF blog post entitled "Ten