Abstract
tionwide Food Consumption Survey (NFCS). Elasticities derived from NFCS data are generally viewed as reasonable measures of consumer behavior because the data are quite comprehensive, being collected from thousands of households across the forty-eight contiguous United States. Users of these data sets employ different econometric models (e.g., AIDS, CBS, LES, and Rotterdam) and often derive elasticities that differ widely in magnitude (Park et al.; Gao, Wailes, and Cramer). A few researchers have employed several models within a single study and found own-price and expenditure elasticities that differ in magnitude from model to model by as much as three to four times.
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