美联储：讨厌杂货通胀的新原因：衡量和解释通胀异质性（英文版）

The 2021-2022 inflation episode presented the first opportunity to examine inflation and price dispersion using U.S. scanner data in a high-inflation environment. Data from 50,000 outlets reveals that price changes across similar goods grew more dispersed in 2022 before falling again in 2023. This paper documents how price change dispersion interacts with households’ product choices to generate substantial inflation heterogeneity. Household-level inflation rates exhibit a 1.4 percentage point