Income, Schooling, and Ability: Evidence from a New Sample of Identical Twins
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We develop a model of optimal schooling investments and estimate it using new data on approximately 700 identical twins. We estimate an average return to schooling of 9 percent for identical twins, but estimated returns appear to be slightly higher for less able individuals. Simple cross-section
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美国国家经济研究局创建时间：
1997-07-01
