Discrimination in Grading
通过实验招募教师批改试卷，随机分配种姓等学生特征，发现低种姓试卷得分比高种姓低0.03至0.08个标准差，行为符合统计歧视理论。
We report the results of an experiment that was designed to test for discrimination in grading in India. We recruited teachers to grade exams. We randomly assigned child “characteristics” (age, gender, and caste) to the cover sheets of the exams to ensure that there is no relationship between these observed characteristics and the exam quality. We find that teachers give exams that are assigned to be lower caste scores that are about 0.03 to 0.08 standard deviations lower than those that are assigned to be high caste. The teachers' behavior appears consistent with statistical discrimination.