Inaccurate measures of the aggregate price level may distort short-run policy decisions and may produce misleading comparisons of productivity growth across decades and among nations. Primarily intended for non-US readers, this paper serves the dual purpose of reviewing compactly the vast US literature on price and output measurement, and of identifying special aspects of US methods which affect international comparisons of inflation and output growth. The traditional problem of substitution bias in the Consumer Price Index (CPI) is of minor importance compared with the bias introduced by new products, changes in the quality of existing products and outlet substitution bias. The quality bias for US consumer durables has recently been estimated to be roughly 1.5% per year for the post-war period, and roughly 3% per year for producer durable goods. The only available study of outlet substitution bias estimates a 2% annual rate for food in the 1980s. Cross-country differences in measurement methods tend to overstate the recent productivity performance of US relative to European manufacturing, with an understatement for US non-manufacturing. Both European and US manufacturing performance are probably understated relative to Japan, which seems to do the best job of incorporating new products and correcting for quality change of high-tech goods.
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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number
663.
Find related papers by JEL classification: C82 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Macroeconomic Data E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation O47 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Measurement of Economic Growth; Aggregate Productivity; Cross-Country Output Convergence
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