An Empirical Study of the Dynamics of Nominal Interest Rates: Australian and Global Perspectives

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Primary Supervisor
Nguyen, Duc-Tho (Tom)
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Hodgson, Allan
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2003
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Abstract

This study explores the inter relationships between the nominal interest rates of Australia and its principal trading partners. The analysis focus on the short end of the yield curve --specifically, rates of up to one year to maturity. In essence, the study comprises a suite of essays, which together provide an overall understanding of the relevant relationship that is, in both depth and scope, greater than the sum of the individual essays. The inquiry begins with an investigation of the impact of the overnight information content of international interest rates upon the Australian domestic money market. The results indicate that the strongest information impact on Australian interest rates is from the overnight interest and exchange rates of the United States. This is followed, in the second essay, by an investigation of the relationship between domestically and internationally traded Australian dollar denominated, financial assets. The results indicate that a Euro-Australian dollar inter-bank deposit and Australian bank accepted bills are effectively the same assets. Based on this result the third essay investigates the extent to which the short-term nominal interest rates of Australia, the United Kingdom, the United States and Japan are consistent with the expectations theory of the interest rate term structure. The results indicate that nominal inter-bank deposit rates in all four currencies are broadly consistent with the expectations theory. In addition, two common stochastic trends are identified, which can be associated with the markets of the United States and Japan. The forth essay focuses on the bilateral relationships between the nominal interest rates of Australia, the United States, the United Kingdom and Japan, and aims at establishing the extent to which the observed data is consistent with interest rate parity conditions. It was found that, in the long run, and with some exceptions, there is strong support for all three of the usual parity conditions. These relationships are interpreted as a measure of the efficiency with which the interest rates are simultaneously determined across the four markets. The final essay brings together insights gained in the preceeding essays to help analysis the interactions between each of the four markets at each of the four maturities selected within the consistent framework of a single model. The results indicate that the system can be usefully conceptualised as interactions between two sub-systems. The first sub-system models the nexus between Australia and the United States, and the second sub-system, that between the United Kingdom and Japan. The interactions within and between these two sub-systems are found to change as the maturity increases. At the shortest maturity, Australian interest rates are directly affected by both sub-systems. In contrast, at the longest maturity, Australian interest rates anticipate those of the United States and are not directly affected by the second sub-system.

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Thesis (PhD Doctorate)
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Doctor of Philosophy (PhD)
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School of Economics
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The author owns the copyright in this thesis, unless stated otherwise.
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Subject
Nominal interest rates
Australia
United States
United Kingdom
Japan
Australian domestic money market
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