Price Variability and Industrial Concentration in U.S. Food Industries
研究了美国食品行业在集中度上升期间，产业内价格波动的影响因素，发现产业集中度降低了相对价格对平均通胀率的敏感度，从而可能部分抵消集中度提高带来的静态福利损失。
This paper focuses on the sources of intra‐industry price variability in US food industries during a period of increasing concentration, while accounting for the impact of variations in prices of primary agricultural products. Results suggest that intra‐industry price variability in food industries increases with their respective mean rate of inflation and product heterogeneity. However, industrial concentration lowers the sensitivity of relative prices to changes in the mean rate of inflation. Hence, static welfare losses to consumers from increasing concentration in food industries, a subject of recent and intensive investigation, can partly be offset by gains such as reduced price variability.