Are economics students biased against female teachers? Evidence from a randomized, double-blind natural field experiment
通过一项在真实教育环境中进行的随机双盲实验，研究了学生对女教师的性别偏见，发现学生在帮助性、知识和响应时间三个维度上均未表现出对女教师的偏见。
Student evaluations of teaching tend to be biased against female teachers. Such biases has previously been shown to thrive in anonymous, online settings, such as internet forums. We designed a randomized, double-blind experiment in a natural educational setting to study gender biases in teaching evaluations. In the early post-Covid period, we randomly assigned a male or female name to the instructions given by the online teachers. Importantly, the teachers actually responding to the questions did not know whether they interacted with the students as male or female, which is a novel contribution to the literature. The course evaluation asked students to rate the mentors’ helpfulness, knowledge, and response time. The results show no bias against the female mentor in any single dimension. Our confidence interval around the zero effect does not overlap the effect sizes reported in highly influential previous studies.