Abstract
This thesis consists of three essays in Applied Macroeconomics. Each essay is contained in
one chapter and can be read as a standalone piece.
Chapter 1 proposes a new strategy for the identification of monetary policy shocks in Structural Vector Autoregressions (SVARs). It combines traditional sign restrictions with external constraints on high-frequency monetary surprises and Federal Reserve internal forecasts. I use it to assess the transmission of
US monetary policy over the period 1965-2007. First, I find that contractionary monetary
shocks unequivocally decrease output, sharpening the ambiguous implications of standard
sign-restricted SVARs. Second, I show that the identified monetary shocks and monetary
policy equations are consistent with a narrative reading of the times and Taylor-type rules.
Finally, I implement an algorithm for robust Bayesian inference in set-identified SVARs,
providing further evidence in support of the methodology I propose in this chapter.
Chapter 2 studies the relationship between monetary policy decisions taken by the Federal
Open Market Committee (FOMC) and higher moments of expected economic outcomes.
First, I employ quantile factor models to characterize the conditional distribution of central
bank economic projections and construct indicators of uncertainty and skewness. Second, I
find that the skewness of expected output growth and inflation rate is a crucial predictor of the
changes in the intended federal funds rate deliberated by the FOMC. This empirical evidence
is found to be reconcilable with central bank’s optimal behavior under non-linear weighting
of probability. My findings suggest that considering central moments only is not enough to
fully capture the systematic component of monetary policy and lead therefore to important
implications for the identification of monetary shocks. Specifically, I find that conditioning
on higher moments allows to identify monetary shocks exhibiting lower predictability and
that generate theoretically consistent effects on the economy.
In Chapter 3, we study SVAR models that impose internal and external restrictions to setidentify
the Forecast Error Variance Decomposition (FEVD). This object measures the
importance of shocks for macroeconomic fluctuations and is therefore of first-order interest
in business cycle analysis. First, we characterize the endpoints of the FEVD as the extreme
eigenvalues of a symmetric reduced-form matrix coming from quadratic programming. Second,
we use the perturbation theory to prove that the endpoints of the FEVD are differentiable
with respect to the reduced-form parameters. Third, we rely on inference for eigenvalues
to construct confidence intervals that are uniformly consistent in level and have asymptotic
Bayesian interpretation. We also describe the conditions to derive uniformly consistent confidence
intervals for impulse responses. AMonte-Carlo exercise demonstrates the properties of
our approach in finite samples, while an empirical application based on credit supply shocks
illustrates our toolkit. Finally, our machinery can be also used to quantify the sensitivity of
the standard Bayesian inference to the choice of an unrevisable prior.