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dc.contributor.authorOlden, Andreas
dc.contributor.authorMøen, Jarle
dc.date.accessioned2020-04-22T08:39:03Z
dc.date.available2020-04-22T08:39:03Z
dc.date.issued2020-04-22
dc.identifier.issn1500-4066
dc.identifier.urihttps://hdl.handle.net/11250/2652016
dc.description.abstractTriple difference has become a widely used estimator in empirical work. A close reading of articles in top economics journals reveals that the use of the estimator to a large extent rests on intuition. The identifying assumptions are neither formally derived nor generally agreed on. We give a complete presentation of the triple difference estimator, and show that even though the estimator can be computed as the difference between two difference-in-differences estimators, it does not require two parallel trend assumptions to have a causal interpretation. The reason is that the difference between two biased difference-in-differences estimators will be unbiased as long as the bias is the same in both estimators. This requires only one parallel trend assumption to hold.en_US
dc.language.isoengen_US
dc.publisherFORen_US
dc.relation.ispartofseriesDiscussion paper;1/20
dc.subjectTriple differenceen_US
dc.subjectdifference-in-difference-in-differencesen_US
dc.subjectdifference-in-differencesen_US
dc.subjectDIDen_US
dc.subjectDiDiDen_US
dc.subjectparallel trend assumptionen_US
dc.titleThe Triple Difference Estimatoren_US
dc.typeWorking paperen_US
dc.source.pagenumber24en_US


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