Problems in the Measurement of Consumer Cost-of-Living Indexes
利用食品需求系统的估计参数，比较了不同人口群体和横截面队列的真实价格指数与拉氏价格指数，探讨了替代偏差、人口群体差异以及非齐次偏好下参考无差异曲线的重要性。
Three empirical issues in the use of cost-of-living indexes are examined: (a) substitution bias, (b) differences across demographic groups, and (c) the importance of the reference indifference curve for true indexes when preferences are nonhomothetic. Using the estimated parameters of a demand system for food commodities from two microdata cross-sections, both true (parametric) and Laspeyres price indexes for food are compared across both demographic groups and cross-sectional “cohorts.”