G2TT
来源类型Publication
Identification based on Difference-in-Differences Approaches with Multiple Treatments
Hans Fricke
发表日期2017
出版者Oxford Bulletin of Economics and Statistics
出版年2017
语种英语
摘要

This paper discusses identification based on difference-in-differences (DiD) approaches with multiple treatments. It shows that an appropriate adaptation of the common trend assumption underlying the DiD strategy for the comparison of two treatments restricts the possibility of effect heterogeneity for at least one of the treatments. The required assumption of effect homogeneity is likely to be violated because of non-random assignment to treatment based on both observables and unobservables. However, this paper shows that, under certain conditions, the DiD estimate comparing two treatments identifies a lower bound in absolute values on the average treatment effect on the treated compared to the unobserved non-treatment state, even if effect homogeneity is violated. This is possible if the treatments have ordered treatment effects, that is, in expectation, the effects of both treatments compared to no treatment have the same sign, and one treatment has a stronger effect than the other treatment on the respective recipients. Such assumptions are plausible if treatments are ordered or vary in intensity.

主题Other
子主题Methodology and Measurement
URLhttps://cepa.stanford.edu/content/identification-based-difference-differences-approaches-multiple-treatments
来源智库Center for Education Policy Analysis (United States)
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/491779
推荐引用方式
GB/T 7714
Hans Fricke. Identification based on Difference-in-Differences Approaches with Multiple Treatments. 2017.
条目包含的文件
文件名称/大小 资源类型 版本类型 开放类型 使用许可
DiD_HF2015.pdf(335KB)智库出版物 限制开放CC BY-NC-SA浏览
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Hans Fricke]的文章
百度学术
百度学术中相似的文章
[Hans Fricke]的文章
必应学术
必应学术中相似的文章
[Hans Fricke]的文章
相关权益政策
暂无数据
收藏/分享
文件名: DiD_HF2015.pdf
格式: Adobe PDF
此文件暂不支持浏览

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。