TY - JOUR AU - Christiano,Lawrence J. AU - Eichenbaum,Martin AU - Vigfusson,Robert TI - What Happens After a Technology Shock? JF - National Bureau of Economic Research Working Paper Series VL - No. 9819 PY - 2003 Y2 - July 2003 UR - http://www.nber.org/papers/w9819 L1 - http://www.nber.org/papers/w9819.pdf N1 - Author contact info: Lawrence Christiano Department of Economics Northwestern University 2001 Sheridan Road Evanston, IL 60208 Tel: 847/491-8231 Fax: 847/491-7001 E-Mail: l-christiano@northwestern.edu Martin S. Eichenbaum Department of Economics Northwestern University 2003 Sheridan Road Evanston, IL 60208 Tel: 847/491-8232 Fax: 847/491-7001 E-Mail: eich@northwestern.edu Robert Vigfusson Federal Reserve Board Washington, DC 20551 E-Mail: robert.j.vigfusson@frb.gov AB - We provide empirical evidence that a positive shock to technology drives per capita hours worked, consumption, investment, average productivity and output up. This evidence contrasts sharply with the results reported in a large and growing literature that argues, on the basis of aggregate data, that per capita hours worked fall after a positive technology shock. We argue that the difference in results primarily reflects specification error in the way that the literature models the low-frequency component of hours worked. ER -