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Exploring the Robustness of the Oil Price-Macroeconomy Relationship
This paper reexamines the oil price-macroeconomy relationship with rolling Granger causality and structural stability tests. It finds that this relationship broke down amidst the falling oil prices and market collapse of the 1980s, suggesting misspecification of the oil price rather than a weakened relationship. Some proposed respecifications of the oil price yield considerable improvements, although they are not sufficient to achieve Granger causality of output unless interest rates are excluded from the VAR. There is some support for the explanation that oil prices affect the economy ...
Problem Loans and Cost Efficiency in Commercial Banks
This paper addresses a little-examined intersection between the problem-loan literature and the bank-efficiency literature. We employ Granger causality techniques to test four hypotheses regarding the relationships among loan quality, cost efficiency, and bank capital. The data suggest that problem loans precede reductions in measured cost efficiency; that measured cost efficiency precedes reductions in problem loans; and that reductions in capital at thinly capitalized banks precede increases in problem loans. Hence, cost efficiency may be an important indicator of future problem loans and ...
Option-Implied Libor Rate Expectations across Currencies
In this paper, I study risk-neutral probability densities regarding future Libor rates denominated in British pounds, euros, and US dollars as implied by option prices. I apply Breeden and Litzenberger?s (1978) result regarding the relationship between option prices and implied probabilities for the underlying to estimate full probability density functions for future Libor rates. I use these estimates in case studies, detailing the evolution of probabalistic expectations for future Libor rates over the course of several important market events. Next, I compute distributional moments from ...
The Optimal Monetary Instrument and the (Mis)Use of Causality Tests
This paper uses a New-Keynesian model with multiple monetary assets to show that if the choice of instrument is based solely on its propensity to predict macroeconomic targets, a central bank may choose an inferior policy instrument. We compare a standard interest rate rule to a k-percent rule for three alternative monetary aggregates determined within our model: the monetary base, the simple sum measure of money, and the Divisia measure. Welfare results are striking. While the interest rate dominates the other two monetary aggregate k-percent rules, the Divisia k-percent rule outperforms the ...