TY - JOUR AU - Feenstra,Robert C. TI - Measuring the Welfare Effect of Quality Change: Theory and Application of Japanese Autos JF - National Bureau of Economic Research Working Paper Series VL - No. 4401 PY - 1993 Y2 - July 1993 UR - http://www.nber.org/papers/w4401 L1 - http://www.nber.org/papers/w4401.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 AB - The purpose of this paper is to identify conditions under which hedonic price indexes provide an exact measure of consumer welfare, so that the welfare effects of quality change can be inferred. Our results are quite positive in providing a rational for existing practices, though the conditions needed to justify these practices are somewhat restrictive. An application of our results is provided to the increase in characteristics of Japanese autos sold in the United States following the imposition of quotas in 1981. We argue that consumers did not value the additional characteristics at their former shadow-values, but rather, attached a lower value to the increase in characteristics. We compute the exact index that reflects this lower imputed value, and compare it to the conventional quality adjustment. The deadweight loss associated with the quality change is between one-quarter and one-third of the value of upgrading. ER -