Redistribution Without Distortion: Evidence from an Affirmative Action Programme at a Large Brazilian University
研究了巴西坎皮纳斯州立大学为弱势群体（公立高中申请者）在入学考试中加分的平权政策，发现该政策显著提高了他们的录取概率，且未影响备考努力。
We examine an innovative affirmative action policy at UNICAMP, a large and highly ranked Brazilian university, designed to enhance access for disadvantaged (public high school) applicants. The university awarded bonus points to targeted applicants in their admission exam. We assess the effect of this policy on the composition of admitted students and investigate possible behavioural responses in terms of exam-preparation effort. We find that the policy significantly increased the admission probability of public high school applicants and redistributed university admission towards applicants from families with lower socio-economic status. Surprisingly, we find little evidence of behavioural reactions regarding exam-preparation effort.