Variety Pass-Through: An Examination of the Ready-to-Eat Breakfast Cereal Market
研究了多产品零售商如何根据批发价格变化调整产品线长度，即品种传导效应，发现零售商同时调整零售价格和产品线长度，并强调计算价格传导率时需控制产品线决策的内生性。
We examine variety pass-through effects that occur when multiproduct retailers adjust the length of their product lines in response to changes in wholesale prices. Studying variety pass-through is essential to understanding how wholesale price changes transmit into retail prices when variety is endogenous. Using data from the ready-to-eat breakfast cereal category, we find that retailers jointly adjust retail prices and the length of their product lines in response to changes in wholesale prices. We show the importance of controlling for the endogeneity of retailers’ product line decisions when calculating price pass-through rates. © 2015 The President and Fellows of Harvard College and the Massachusetts Institute of Technology