TY - JOUR AU - Feenstra,Robert C. AU - Markusen,James R. TI - Accounting for Growth With New Inputs JF - National Bureau of Economic Research Working Paper Series VL - No. 4114 PY - 1992 Y2 - July 1992 UR - http://www.nber.org/papers/w4114 L1 - http://www.nber.org/papers/w4114.pdf N1 - Author contact info: Robert C. Feenstra Department of Economics University of California, Davis One Shields Avenue Davis, CA 95616 Tel: 530/752-7022 Fax: 530/752-9382 E-Mail: rcfeenstra@ucdavis.edu James R. Markusen Department of Economics University of Colorado Boulder, CO 80309-0256 Tel: 303/492-0748 Fax: 303/492-8960 E-Mail: james.markusen@colorado.edu AB - In this paper we examine how to account for growth when new inputs are being created. In particular, we obtain a decomposition of growth into that due to a higher quantity of existing inputs, and that due to a greater range of inputs. This decomposition is first obtained for a single firm, with a CES production function. We then generalize to the GNP function of an economy. and again show how a decomposition of growth in GNP can be obtained. An example is presented of a two-sector economy, where new inputs are endogenously created each period, and a simple aggregate production function exists. Data for this economy are simulated, and the GNP function is estimated using various different measures of the factor inputs. ER -