no code implementations • 13 Mar 2024 • Giovanni Angelini, Luca Fanelli, Luca Neri
When in proxy-SVARs the covariance matrix of VAR disturbances is subject to exogenous, permanent, nonrecurring breaks that generate target impulse response functions (IRFs) that change across volatility regimes, even strong, exogenous external instruments can result in inconsistent estimates of the dynamic causal effects of interest if the breaks are not properly accounted for.
no code implementations • 10 Oct 2022 • Giovanni Angelini, Giuseppe Cavaliere, Luca Fanelli
We show that frequentist asymptotic inference in these situations can be conducted through Minimum Distance estimation and standard asymptotic methods if the proxy-SVAR can be identified by using `strong' instruments for the non-target shocks; i. e. the shocks which are not of primary interest in the analysis.