Is a Dream Deferred a Dream Denied? College Enrollment and Time-Varying Opportunity Costs
研究一所公立大学随机分配申请者立即入学或推迟一年入学，发现立即入学组一年半后入学率高出19个百分点，并构建模型分析推迟入学对长期教育成就的影响。
A public college randomly assigns applicants into a group that can enroll immediately and a group that can do so only after 1 year. One and a half years after the first group enrolled, individuals in that group were 19 percentage points more likely to be enrolled than those who had to wait. I present a model of educational decision making that predicts a substantial effect of deferral on attainment only when opportunity costs (wages) can vary across time within individuals. I estimate the model to project the long-term effect of deferred admission on attainment for different groups of applicants.