Food Stamps and Food Spending: An Engel Function Approach
修正了传统消费者选择理论，利用2001-2005年人口调查数据估计食品券参与者和非参与者的恩格尔函数，发现参与者在家食品支出更高、在外食品支出更低。
Abstract Estimation of Food Stamp Program (FSP) effects has been complicated by self‐selection and by a contradiction between observed spending patterns and the economic theory of consumer choice. We developed a modified version of the traditional theory, in which participant households may be partly extramarginal even if they have some cash spending on at‐home food. Using Current Population Survey (CPS) data for 2001–2005, we estimated Engel functions for at‐home and away‐from‐home food spending for FSP participants and nonparticipants. Compared to nonparticipants with the same level of total income, participants had higher at‐home food spending and lower away‐from‐home food spending.