欧洲央行：通货膨胀风险和异质性下降（英文版）

I examine how households adjust the quality of their purchases in response to adverse economic shocks. Using household scanner data from Germany, I document heterogeneous responses across income levels. Higher-income households tend to reduce the quality of the goods they purchase, whereas lower-income households, who typically consume lower-quality goods, show a limited propensity to trade down, likely due to a limited ability to do so. To assess the equilibrium effects of an aggregate shift