TY - JOUR AU - Cogan,John F. AU - Cwik,Tobias AU - Taylor,John B. AU - Wieland,Volker TI - New Keynesian versus Old Keynesian Government Spending Multipliers JF - National Bureau of Economic Research Working Paper Series VL - No. 14782 PY - 2009 Y2 - March 2009 UR - http://www.nber.org/papers/w14782 L1 - http://www.nber.org/papers/w14782.pdf N1 - Author contact info: John Cogan Hoover Institution Stanford University Stanford, CA 94305 Tel: NA E-Mail: cogan@stanford.edu Tobias Cwik Goethe-Universitat Frankfurt am Main House of Finance, PF H 31 D-60323 Frankfurt/Main E-Mail: cwik@wiwi.uni-frankfurt.de John B. Taylor Herbert Hoover Memorial Building Stanford University Stanford, CA 94305-6010 Tel: 650/723-9677 Fax: 650-723-1687 E-Mail: John.Taylor@stanford.edu Volker Wieland Goethe University Frankfurt House of Finance, PF H 31 D-60323 Frankfurt/Main E-Mail: wieland@wiwi.uni-frankfurt.de AB - Renewed interest in fiscal policy has increased the use of quantitative models to evaluate policy. Because of modelling uncertainty, it is essential that policy evaluations be robust to alternative assumptions. We find that models currently being used in practice to evaluate fiscal policy stimulus proposals are not robust. Government spending multipliers in an alternative empirically-estimated and widely-cited new Keynesian model are much smaller than in these old Keynesian models; the estimated stimulus is extremely small just when needed most, and GDP and employment effects are only one-sixth as large, with private sector employment impacts likely to be even smaller. ER -