FOOD DEMAND IN SPAIN: AN APPLICATION OF THE ALMOST IDEAL SYSTEM
使用近乎理想需求系统分析了1964-1989年西班牙六类食品的年度支出数据，纳入习惯效应的动态模型捕捉了消费者行为，并提供了合理的支出和价格弹性估计。
This paper provides an analysis of food demand in Spain for the period 1964–1989 estimating the Almost Ideal Demand System (AIDS) with annual time‐series of food expenditures divided into six categories. A dynamic version of the model incorporating habit effects captures the behaviour of the Spanish food consumer over the period investigated. The theoretical hypotheses of homogeneity and symmetry are rejected, but the model provides plausible expenditure and price elasticities.