Robust inference in structural VARs with long-run restrictions

Guillaume Chevillon, Sophocles Mavroeidis and Zhaoguo Zhan

No WP1702, ESSEC Working Papers from ESSEC Research Center, ESSEC Business School

Abstract: Long-run restrictions are a very popular method for identifying structural vector autoregressions, but they suffer from weak identification when the data is very persistent, i.e., when the highest autoregressive roots are near unity. Near unit roots introduce additional nuisance parameters and make standard weak-instrument-robust methods of inference inapplicable. We develop a method of inference that is robust to both weak identi fication and strong persistence. The method is based on a combination of the Anderson-Rubin test with instruments derived by fi ltering potentially non-stationary variables to make them near stationary. We apply our method to obtain robust con fidence bands on impulse responses in two leading applications in the literature.

Keywords: weak instruments; identification; SVARs; near unit roots; IVX (search for similar items in EconPapers)
JEL-codes: C12 C32 E32 (search for similar items in EconPapers)
Pages: 37 pages
Date: 2016-11-22
New Economics Papers: this item is included in nep-ecm, nep-ets and nep-mac
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:ebg:essewp:dr-17002

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