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Estimating Context-Independent Treatment Effects in Education Experiments

Date: Tuesday, Dec 13, 2022, 12:00 ~ 13:00
Speaker: Steven Lehrer (Queen's University)
Location: 우석경제관 223동 307호
Steven Lehrer 교수님의 세미나가 있을 예정입니다. 

* 주관: 서울대학교 경제학부, 경제연구소 한국경제혁신센터, SSK, BK21

* 본 세미나는 졸업요건(2022-2학기) 및 BK21+(2022-2학기) 세미나 참석으로 인정됩니다.

세미나 참석인정을 원하는 학생은 세미나 종료 후 참석자 명단을 작성해주시기 바랍니다.

Abstract: In this study, we first document that the magnitude of the estimated treatment effect in Project STAR is substantially larger in schools where fewer students were assigned to small classes. The differences in student performance across schools cannot be explained by failure in randomization, other observed school level characteristics or differences in selective test taking. Further, we show that these achievement gains are driven by students in small classes from schools where fewer students were in small classes. The results are suggestive that there was a proportionate change in motivation or effort by teachers who teach small classes but not in regular classes. Second, we introduce empirical strategies for experimental studies that aims at disentangling the pure educational effect from a specific treatment from that which is attributable to the interaction between the treatment and the social context in which the experiment takes place. Using minimal structural assumptions, we disentangle the estimated treatment effect into components that are context specific and context independent. Our results indicate that between 50 and 80% of the estimated treatment effect in Project STAR is context specific.
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