Price Inertia and Policy Ineffectiveness in the United States, 1890-1980

This paper introduces a new approach to the empirical testing of the Lucas- Sargent-Wallace (LSW) "policy ineffectiveness proposition." Instead of testing that hypothesis in isolation from any plausible alternative, the paper develops a single empirical equation explaining price change that includes as special cases both the LSW proposition and an alternative hypothesis. The alternative, dubbed "NRH-GAP," states that prices respond fully in the long run, but only gradually in the short run, to nominal aggregate demand disturbances. A second innovation is the development of a quarterly data file for the period 1890-1980, thus opening up more than 200 new quarterly observations for analysis. A third innovation is the testing of three different methods of introducing "persistence effects" into the LSW analytical framework. In conflict with the predictions of the LSW approach, the results here exhibit uniformly high coefficients of real output and low coefficients of price changes in response to anticipated nominal GNP changes. Further, price changes respond positively and output responds negatively to lagged changes in prices, reflecting the short-run inertia in price-setting that for