TY - JOUR AU - Manuelli,Rodolfo AU - Seshadri,Ananth TI - Frictionless Technology Diffusion: The Case of Tractors JF - National Bureau of Economic Research Working Paper Series VL - No. 9604 PY - 2003 Y2 - April 2003 UR - http://www.nber.org/papers/w9604 L1 - http://www.nber.org/papers/w9604.pdf N1 - Author contact info: Rodolfo Manuelli Department of Economics Washington University in St. Louis Campus Box 1208; St. Louis, MO 63130-4899 Tel: 608/263-3877 Fax: 608/262-2033;608/263-3876 E-Mail: manuelli@artsci.wustl.edu Ananth Seshadri Department of Economics University of Wisconsin 1180 Observatory Drive Madison, WI 53705 E-Mail: aseshadr@ssc.wisc.edu AB - Empirical evidence suggests that there is a long lag between the time a new technology is introduced and the time at which it is widely adopted. The conventional wisdom is that these observations are inconsistent with the predictions of the frictionless neoclassical model. In this paper we show this to be incorrect. Once the appropriate driving forces are taken into account, the neoclassical model can account for slow' adoption. We illustrate this by developing an industry model to study the equilibrium rate of diffusion of tractors in the U.S. between 1910 and 1960. ER -