Duarte, Marco; Magnolfi, Lorenzo; Sølvsten, Mikkel; … - In: Quantitative economics : QE ; journal of the … 15 (2024) 3, pp. 571-606
misspecification. However, degeneracy of RV invalidates inference. With a novel definition of weak instruments for testing, we connect … degeneracy to instrument strength, derive weak instrument properties of RV, and provide a diagnostic for weak instruments by …