A Reconsideration of Hedonic Price Indexes with an Application to PC’s
比较了享乐价格指数与匹配模型指数，发现匹配模型因只选取仍在售商品而高估价格，享乐指数能纠正此偏差。以个人电脑为例，享乐指数显示价格大幅下降，而匹配模型指数近乎为零。
This paper compares hedonic to matched model indexes. Matched model indexes are averages of the price changes of goods that remain on sampled stores’ shelves. Since goods that disappear tend to have falling market values, matched model indexes select from the right tail of price changes. The BLS can construct hedonic indexes that correct for this selection and are justified by standard arguments. In an empirical study of PC’s hedonics produce sharp price declines while matched model indexes are near zero. Also, though there are modifications to hedonics that seem desirable, they are not those in current use.