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Journal ArticleDOI

The Great Crash, the Oil Price Shock, and the Unit Root Hypothesis

Pierre Perron
- 01 Nov 1989 - 
- Vol. 57, Iss: 6, pp 1361-1401
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TLDR
In this paper, the authors consider the null hypothesis that a time series has a unit root with possibly nonzero drift against the alternative that the process is "trend-stationary" and show how standard tests of the unit root hypothesis against trend stationary alternatives cannot reject the unit-root hypothesis if the true data generating mechanism is that of stationary fluctuations around a trend function which contains a one-time break.
Abstract
We consider the null hypothesis that a time series has a unit root with possibly nonzero drift against the alternative that the process is «trend-stationary». The interest is that we allow under both the null and alternative hypotheses for the presence for a one-time change in the level or in the slope of the trend function. We show how standard tests of the unit root hypothesis against trend stationary alternatives cannot reject the unit root hypothesis if the true data generating mechanism is that of stationary fluctuations around a trend function which contains a one-time break

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Who moves East Asian stock markets? The role of the 2007–2009 global financial crisis☆

TL;DR: This article examined the integration and causality of interdependencies among six major East Asian stock exchanges, while also considering their interactions with the USA before and during the 2007-2009 global financial crisis.
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Effects of changing trade structure and technical characteristics of the manufacturing sector on energy intensity in Ghana

TL;DR: In this paper, the authors examined the effects of changing trade structure and changing technical characteristics of the manufacturing sector in Ghana alongside the effect of foreign direct investment and urbanization on energy intensity in Ghana.
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The Commodity Terms of Trade, Unit Roots, and Nonlinear Alternatives: A Smooth Transition Approach

TL;DR: In this article, the authors examined the role of transactions costs in the North American oriented strand board markets and showed that nonlinearity is an important feature of these markets and that parity relationships implied by economic theory are generally supported by the smooth transition autoregressions.
Posted Content

Retail-Price Drivers and Retailer Profits

TL;DR: In this paper, the relative importance of competitive retailer prices, pricing history, brand demand, wholesale prices, and retailer category-management considerations as drivers of retail prices was quantified based on multivariate time-series analysis of two rich data sets.
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European Integration, Productivity Growth and Real Convergence

TL;DR: This article derived a stochastic endogenous growth model that investigates the impact of European Union integration on convergence and productivity growth and derived implications for the first-round EU candidate countries to derive implications.
References
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Journal ArticleDOI

Co-integration and Error Correction: Representation, Estimation and Testing

TL;DR: The relationship between co-integration and error correction models, first suggested in Granger (1981), is here extended and used to develop estimation procedures, tests, and empirical examples.
Journal ArticleDOI

Distribution of the Estimators for Autoregressive Time Series with a Unit Root

TL;DR: In this article, the limit distributions of the estimator of p and of the regression t test are derived under the assumption that p = ± 1, where p is a fixed constant and t is a sequence of independent normal random variables.
Journal ArticleDOI

Testing for a Unit Root in Time Series Regression

TL;DR: In this article, the authors proposed new tests for detecting the presence of a unit root in quite general time series models, which accommodate models with a fitted drift and a time trend so that they may be used to discriminate between unit root nonstationarity and stationarity about a deterministic trend.
Book

Convergence of Probability Measures

TL;DR: Weak Convergence in Metric Spaces as discussed by the authors is one of the most common modes of convergence in metric spaces, and it can be seen as a form of weak convergence in metric space.
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