So, based on that, we were able to say that increasing compulsory schooling did actually have an effect on their cognitive abilities as measured at 19 years of age.

那么，在此基础上，我们能够说，增加义务教育实际上确实影响他们19岁的认知能力。

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Average years of schooling of rural residents aged between 20 and 25 in a county have a larger effect on education than county income per capita.

与县人均收入相比，县20—25岁年龄段人口平均教育水平对样本年龄段农村居民教育水平的影响更大。

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Average years of schooling of rural residents aged between 20 and 25 in a county have a larger effect on education than county income per capita.

与县人均收入相比，县20—25岁年龄段人口平均教育水平对样本年龄段农村居民教育水平的影响更大。

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