The Trade-Off between Flexibility and Robustness in Instrumental Variables Analysis

• 成果类型: Article
• 署名作者: Deaner, Ben
• 署名单位: University of London; University College London
• 刊物名称: AMERICAN ECONOMIC REVIEW
• ISSN/ISSBN: 0002-8282; 1944-7981
• DOI: 10.1257/aer.20231765
• 发表日期: 2025-11
• 页码: 3975-3998
• 关键词: child achievement evidence; family income; identification; models; completeness; regression; IMPACT

摘要

In additive instrumental variables models, the robustness to some failure of instrumental validity or additive separability depends on the strength of a priori restrictions on the structural relationship between outcomes and treatments. I provide theoretical analysis of the problem, discuss the implications for empirical practice, and demonstrate with a numerical study calibrated on real-world data. (JEL C26, G51, H24, J13)