Product Differentiation and Cost Pass‐Through
研究了产品差异化如何影响成本传导率，利用德国酸奶市场432家门店30种产品312周的数据，发现差异化程度越高的产品价格越高，成本传导率越低且价格调整更缓慢。
Abstract The present paper extends the existing literature on vertical price transmission and cost pass‐through by investigating the impact of product differentiation. We apply distance‐measures of product differentiation to a specific product market (yoghurt) within one country (Germany). Results from a panel‐error‐correction model for 30 products sold in 432 stores over a period of 312 weeks suggest that product differentiation explains a significant share of differences in cost pass‐through rates: more differentiated products command higher prices and are characterised by lower equilibrium cost pass‐through rates as well as more sluggish price adjustment.