A Cross‐Section Demand Analysis of Spanish Provincial Food Consumption
采用微分方法构建三个西班牙跨省食品消费模式的需求模型，包含二次收入项以估计截面数据中差异较大的收入反应，并通过非嵌套检验选择最佳模型。
Abstract I follow the differential approach in building three demand models of Spanish cross‐province food consumption patterns. The models include quadratic income terms for estimating the widely varying income responses one expects from cross‐section data. The proposed models are also flexible in permitting alternative levels of aggregation across goods. A nonnested testing procedure is used to identify the best model. Both the flexibility of the quadratic income term and the flexibility of alternative aggregation levels are important in the analysis of Spanish food consumption patterns.