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基于20世纪80~90年代的住户调查数据,我们采用“断点回归设计”的方法,检验了科特迪瓦的总财富是否扩散到与邻国交界的边界地区。在80年代末期与加纳交界的地区,在消费、儿童成长发育障碍、用电情况和安全水源等方面出现大量的“断点”。消费方面的边界“断点”现象可解释为经济作物的政策存在差异(如可可和咖啡)。当90年代这些政策得到融合后,仍然存在差异的仅仅是在农业设施方面。在北部,
Based on the household survey data from the 1980s and 1990s, we used the “breakpoint regression design” method to test whether the total wealth in Côte d’Ivoire has spread to the border areas with neighboring countries. In the late 1980s when the area was at the junction with Ghana, a large number of “breakpoints” appeared in areas such as consumption, child growth and development obstacles, electricity consumption and safe water supply. The boundaries of consumption “breakpoint ” phenomenon can be interpreted as differences in the policy of cash crops (such as cocoa and coffee). When these policies were merged in the 1990s, the only difference still exists in agricultural facilities. In the north,