This article and the one that follows it, "Economic Theory and BEA 's Alternative Quantity and Price Indexes," present results of BEA's work on alternative measures of production and prices. These measures, which are designed to supplement BEA's featured fixed weighted measures, were first described in "Alternative Measures of Real GNP" in the April 1989 Survey of Current Business; in that article, BEA stated that it would develop the alternative measures as part of the next comprehensive revision of the national income and product accounts.