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Jel Classification:C36 

Working Paper
A Robust Test for Weak Instruments with Multiple Endogenous Regressors

We extend the popular bias-based test of Stock and Yogo (2005) for instrument strength in linear instrumental variables regressions with multiple endogenous regressors to be robust to heteroskedasticity and autocorrelation. Equivalently, we extend the robust test of Montiel Olea and Pflueger (2013) for one endogenous regressor to the general case with multiple endogenous regressors. We describe a simple procedure for applied researchers to conduct our generalized first-stage test of instrument strength and provide efficient and easy-to-use Matlab code for its implementation. We demonstrate ...
Working Papers , Paper 2208

Working Paper
Reconstruction Multipliers

Following the 2009 L'Aquila earthquake, financing of reconstruction by the Italian central government resulted in a sharp and unanticipated discontinuity in grants across municipalities that were ex-ante very similar. Using the emergency financing law as an instrument, we identify the causal effect of municipal government spending on local activity, controlling for the negative supply shock from the earthquake. In our estimates, this "reconstruction multiplier" is around unity, and we show that the grants provided public insurance. Economic activity contracted in municipalities that did not ...
Finance and Economics Discussion Series , Paper 2014-79

Working Paper
Local Projections, Autocorrelation, and Efficiency

It is well known that Local Projections (LP) residuals are autocorrelated. Conventional wisdom says that LP have to be estimated by OLS with Newey-West (or some type of Heteroskedastic and Autocorrelation Consistent (HAC)) standard errors and that GLS is not possible because the autocorrelation process is unknown and/or because the GLS estimator would be inconsistent. I derive the autocorrelation process of LP and show that it can be corrected for using a consistent GLS estimator. Estimating LP with GLS has three major implications: 1) LP GLS can be less biased, more efficient, and generally ...
Research Working Paper , Paper RWP 21-01

Working Paper
In-migration and Dilution of Community Social Capital

Consistent with predictions from the literature, we find that higher levels of in-migration dilute multiple dimensions of a community's level of social capital. The analysis employs a 2SLS methodology to account for potential endogeneity of migration.
FRB Atlanta Working Paper , Paper 2018-5

Working Paper
Facts and Fiction in Oil Market Modeling

A series of recent articles has called into question the validity of VAR models of the global market for crude oil. These studies seek to replace existing oil market models by structural VAR models of their own based on different data, different identifying assumptions, and a different econometric approach. Their main aim has been to revise the consensus in the literature that oil demand shocks are a more important determinant of oil price fluctuations than oil supply shocks. Substantial progress has been made in recent years in sorting out the pros and cons of the underlying econometric ...
Working Papers , Paper 1907

Working Paper
Dynamic Identification Using System Projections and Instrumental Variables

We propose System Projections on Instrumental Variables (SP-IV) to estimate dynamic structural relationships using impulse responses obtained from local projections or vector autoregressions. SP-IV replaces lag sequences of instruments in traditional IV with lead sequences of endogenous variables. By allowing the inclusion of lagged variables as controls, SP-IV weakens exogeneity requirements and can improve efficiency and effective instrument strength relative to 2SLS. We provide inference procedures under strong and weak identification, and show that SP-IV outperforms conventional IV ...
Working Papers , Paper 2204

Working Paper
Interest Rate Surprises: A Tale of Two Shocks

Interest rate surprises around FOMC announcements reveal both the surprise in the monetary policy stance (the pure policy shock) and interest rate movements driven by exogenous information about the economy from the central bank (the information shock). In order to disentangle the effects of these two shocks, we use interest rate changes on days of macroeconomic data releases. On these release dates, there are no pure policy shocks, which allows us to identify the impact of information shocks and thereby distill pure policy shocks from interest rate surprises around FOMC announcements. Our ...
Working Papers , Paper 22-2

Working Paper
Reconsidering the Fed’s Forecasting Advantage

Previous studies show the Fed has a forecast advantage over the private sector, either because it devotes more resources to forecasting or because it has an informational advantage in knowing the path of future monetary policy. We evaluate the Fed’s forecast advantage to determine how much of it results from the Fed’s knowledge of the conditioning path. We develop two tests—an instrumental variable encompassing test and a path-dependent encompassing test—to equalize the Fed’s information set with the private sector’s. We find that, generally, the Fed does not encompass the private ...
Working Papers , Paper 2022-001

Working Paper
Understanding the Estimation of Oil Demand and Oil Supply Elasticities

This paper examines the advantages and drawbacks of alternative methods of estimating oil supply and oil demand elasticities and of incorporating this information into structural VAR models. I not only summarize the state of the literature, but also draw attention to a number of econometric problems that have been overlooked in this literature. Once these problems are recognized, seemingly conflicting conclusions in the recent literature can be resolved. My analysis reaffirms the conclusion that the one-month oil supply elasticity is close to zero, which implies that oil demand shocks are the ...
Working Papers , Paper 2027

Working Paper
Reconsidering the Fed's Inflation Forecasting Advantage

Previous studies show the Fed has a forecast advantage over the private sector for inflation, either because it devotes more resources to forecasting or because it has an informational advantage. We evaluate the Fed's forecast advantage to determine how much of it results from the Fed's knowledge of future monetary policy. We develop two tests -- an instrumental variable encompassing test and a path-dependent encompassing test -- to equalize the Fed's information set with the private sector's. We find that Fed forecasts do not encompass those of the private sector when the latter has ...
Working Papers , Paper 2022-001

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