期刊名称：Departmental Discussion Papers / University of Glasgow, Department of Economics
出版年度：2009
卷号：1
出版社：University of Glasgow, Department of Economics
摘要：The breakdown of the Bretton Woods system and the adoption of generalized
.oating exchange rates ushered in a new era of exchange rate volatility and uncer-
tainty. This increased volatility lead economists to search for economic models able
to describe observed exchange rate behavior. In the present paper we propose more
general STAR transition functions which encompass both threshold nonlinearity and
asymmetric e¡èects. Our framework allows for a gradual adjustment from one regime
to another, and considers threshold e¡èects by encompassing other existing models,
such as TAR models. We apply our methodology to three di¡èerent exchange rate
data-sets, one for developing countries, and o¡é cial nominal exchange rates, the sec-
ond emerging market economies using black market exchange rates and the third
for OECD economies.
关键词：unit root tests, threshold autoregressive models, purchasing power
parity.
