The Redistributive Effects of Agricultural Policy on Scottish Farm Incomes
提出基于基尼系数绝对值变化的方法，衡量农业政策的再分配效应。以苏格兰1999/2000年数据为例，发现支持分配对农场收入具有累退性，但若不改变收入排序则具有均等化效应；排序变化导致耦合支持政策作为再分配工具既无效又低效。
Abstract This paper focuses on the measurement of the redistributive effects of agricultural policy, proposing measures to characterise and quantify these effects that are based on the change in absolute value of the Gini coefficient. An illustrative study shows that the distribution of support in Scotland in 1999/2000 was regressive with respect to pre‐support farm incomes. Nevertheless, the provision of support would have had an equalising effect on farm incomes but for the resulting changes in the ranking of farms within the income distribution. Reranking not only makes ‘coupled’ support policies ineffective but also inefficient as redistributive instruments.