Identification, estimation and inference in Panel Vector Autoregressions using external instruments

Fuente: arXiv
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Main Author: Pala, Raimondo
Format: Preprint
Published: 2025
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author Pala, Raimondo
author_facet Pala, Raimondo
contents This paper proposes an identification inspired from the SVAR-IV literature that uses external instruments to identify PVARs, and discusses associated issues of identification, estimation, and inference. I introduce a form of local average treatment effect - the $μ$-LATE - which arises when a continuous instrument targets a binary treatment. Under standard assumptions of independence, exclusion, and monotonicity, I show that externally instrumented PVARs estimate the $μ$-LATE. Monte Carlo simulations illustrate that confidence sets based on the Anderson-Rubin statistics deliver reliable convergence for impulse responses. As an application, I instrument state-level military spending with the state's share of national spending to estimate the dynamic fiscal multiplier. I find multipliers above unity, with effects concentrated in the contemporaneous year and persisting into the following year.
format Preprint
id arxiv_https___arxiv_org_abs_2511_19372
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Identification, estimation and inference in Panel Vector Autoregressions using external instruments
Pala, Raimondo
Econometrics
This paper proposes an identification inspired from the SVAR-IV literature that uses external instruments to identify PVARs, and discusses associated issues of identification, estimation, and inference. I introduce a form of local average treatment effect - the $μ$-LATE - which arises when a continuous instrument targets a binary treatment. Under standard assumptions of independence, exclusion, and monotonicity, I show that externally instrumented PVARs estimate the $μ$-LATE. Monte Carlo simulations illustrate that confidence sets based on the Anderson-Rubin statistics deliver reliable convergence for impulse responses. As an application, I instrument state-level military spending with the state's share of national spending to estimate the dynamic fiscal multiplier. I find multipliers above unity, with effects concentrated in the contemporaneous year and persisting into the following year.
title Identification, estimation and inference in Panel Vector Autoregressions using external instruments
topic Econometrics
url https://arxiv.org/abs/2511.19372