Unobservable Selection and Coefficient Stability: Theory and Validation
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A common heuristic for evaluating robustness of results to omitted variable bias is to look at coefficient movements after inclusion of controls. This heuristic is informative only if selection on observables is proportional to selection on unobservables. I formalize this link, drawing on theory in
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美国国家经济研究局创建时间：
2013-05-01
