Measuring the Aggregate Price Level: Implications for Economic Performance and Policy

Robert Gordon

No 663, CEPR Discussion Papers from Centre for Economic Policy Research

Abstract: 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.

Keywords: Growth; Prices (search for similar items in EconPapers)
JEL-codes: C82 E31 O47 (search for similar items in EconPapers)
Date: 1992-06
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Citations: View citations in EconPapers (10)

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Working Paper: Measuring the Aggregate Price Level: Implications For Economic Performance and Policy (1992)
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