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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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Does the real interest parity hypothesis hold? Evidence for developed and emerging markets

TL;DR: In this paper, the authors present empirical evidence on the real interest parity hypothesis for a set of emerging and developed countries, and show that the adjustment tends to be highly asymmetric and markedly different for developed and emerging markets.
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International Evidence on the Neutrality of Money

TL;DR: In this paper, the authors used the Backus and Kehoe (1992) long, low frequency data on real GNP/GDP and money for Australia, Canada, Denmark, Germany, Italy, Japan, Norway, Sweden, the United Kingdom, and the United States to examine the long run neutrality and superneutrality of money propositions.
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Unit roots in the presence of abrupt governmental interventions with an application to Brazilian data

TL;DR: In this paper, the authors consider econometric issues related to time-series data that have been subject to abrupt governmental interventions and show a substantial bias in favour of concluding that the series is stationary and that shocks have temporary effects.
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Asymmetry in the U.S. Output-Inflation Nexus

TL;DR: In this paper, the authors present empirical evidence supporting the proposition that there is a significant asymmetry in the U.S. output-inflation process and the important policy implication of this asymmetry is that it can be very costly if the economy overheats because this will necessitate a severe tightening in monetary conditions in order to re-establish inflation control.
Posted Content

Transmission Mechanism of Monetary Policy in Centraland Eastern Europe

TL;DR: In this article, the authors reviewed the existing literature on transmission mechanism in CEE and put it in a broader context of the problems related to research on monetary policy, and attempted to conduct empirical analysis for 10 transition economies using analogous methodology for the same sample period 1995-2000.
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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