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In the classical linear IV model with multiple instruments, we show that the FAS has a simple closed\u2010form expression that only depends on a few 2SLS coefficients. We apply our results to an empirical study of roads and trade. We show how the FAS complements traditional overidentification tests by summarizing the variation in estimates obtained from alternative nonfalsified models.<\/jats:p>","DOI":"10.3982\/ecta17969","type":"journal-article","created":{"date-parts":[[2021,5,3]],"date-time":"2021-05-03T12:20:13Z","timestamp":1620044413000},"page":"1449-1469","source":"Crossref","is-referenced-by-count":32,"title":["Salvaging Falsified Instrumental Variable Models"],"prefix":"10.3982","volume":"89","author":[{"given":"Matthew A.","family":"Masten","sequence":"first","affiliation":[{"name":"Department of Economics, Duke University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandre","family":"Poirier","sequence":"additional","affiliation":[{"name":"Department of Economics, Georgetown University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2359","published-online":{"date-parts":[[2021]]},"reference":[{"key":"ecta200301-bib-0001","doi-asserted-by":"crossref","first-page":"791","DOI":"10.3368\/jhr.XL.4.791","volume":"40","author":"Altonji","year":"2005","journal-title":"Journal of Human Resources"},{"key":"ecta200301-bib-0002","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1214\/aoms\/1177730090","volume":"20","author":"Anderson","year":"1949","journal-title":"The Annals of Mathematical Statistics"},{"key":"ecta200301-bib-0003","unstructured":"Andrews, D. 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