When Multiple Objectives Meet Multiple Instruments: Identifying Simultaneous Monetary Shocks
Juan Hernández-Leal () and
Mauricio Villamizar-Villegas ()
Borradores de Economia from Banco de la Republica de Colombia
Central banks generally target multiple objectives while having at least the same number of monetary instruments. However, some instruments can be inadvertently collinear, leading to indeterminacy and identification failures. Paradoxically, most empirical studies have shied away from this dependence. In this paper we propose a novel method of identifying simultaneous monetary shocks by introducing a Tobit model within a VAR. An advantage of our method is that it can be easily estimated using only least squares and a maximum likelihood function. Also, the impulse-response analysis can be carried out as in the traditional time-series setting and can be applied in a structural framework. Hence, we model a dual process consisting of a censored foreign exchange intervention policy along with a linear interest rate intervention policy. In simulation exercises we show that our method outperforms a benchmark case of estimating policy functions separately. In fact, as the covariance between shocks increases, so does the performance of our method. In our empirical approach, we estimate the policy covariance for the case of Colombia and Turkey and find significant differences when compared to the benchmark case.
Keywords: Simultaneous policies, Instrumental VAR; Tobit-VAR; Central bank intervention; Monetary trilemma (search for similar items in EconPapers)
JEL-codes: C34 E52 E58 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-cba, nep-ecm, nep-mac and nep-mon
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Journal Article: When multiple objectives meet multiple instruments: Identifying simultaneous monetary shocks (2018)
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Persistent link: https://EconPapers.repec.org/RePEc:bdr:borrec:997
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