New tools for understanding the local asymptotic power of panel unit root tests

2015 ◽  
Vol 188 (1) ◽  
pp. 59-93 ◽  
Author(s):  
Joakim Westerlund ◽  
Rolf Larsson
Keyword(s):  
Unit Root ◽  
Unit Root Tests ◽  
Panel Unit Root Tests ◽  
Asymptotic Power ◽  
Panel Unit Root ◽  
Local Asymptotic Power

ASYMPTOTICALLY UMP PANEL UNIT ROOT TESTS—THE EFFECT OF HETEROGENEITY IN THE ALTERNATIVES

2014 ◽  
Vol 31 (3) ◽  
pp. 539-559 ◽  
Author(s):  
I. Gaia Becheri ◽  
Feike C. Drost ◽  
Ramon van den Akker
Keyword(s):  
Unit Root ◽  
Generalized Least Squares ◽  
Applied Economics ◽  
Unit Root Tests ◽  
Finite Sample ◽  
Asymptotic Power ◽  
Optimal Tests ◽  
Independent Panel ◽  
Local Asymptotic Power ◽  
Uniformly Most Powerful

In a Gaussian, heterogeneous, cross-sectionally independent panel with incidental intercepts, Moon, Perron, and Phillips (2007, Journal of Econometrics 141, 416–459) present an asymptotic power envelope yielding an upper bound to the local asymptotic power of unit root tests. In case of homogeneous alternatives this envelope is known to be sharp, but this paper shows that it is not attainable for heterogeneous alternatives. Using limit experiment theory we derive a sharp power envelope. We also demonstrate that, among others, one of the likelihood ratio based tests in Moon et al. (2007, Journal of Econometrics 141, 416–459), a pooled generalized least squares (GLS) based test using the Breitung and Meyer (1994, Applied Economics 25, 353–361) device, and a new test based on the asymptotic structure of the model are all asymptotically UMP (Uniformly Most Powerful). Thus, perhaps somewhat surprisingly, pooled regression-based tests may yield optimal tests in case of heterogeneous alternatives. Although finite-sample powers are comparable, the new test is easy to implement and has superior size properties.

Hysteresis in unemployment: empirical evidence from Taiwan's region data based on panel unit root tests

2007 ◽  
Vol 39 (10) ◽  
pp. 1335-1340 ◽  
Author(s):  
Tsangyao Chang ◽  
Ming Jing Yang ◽  
Hui-Chin Liao ◽  
Chia-Hao Lee
Keyword(s):  
Empirical Evidence ◽  
Unit Root ◽  
Unit Root Tests ◽  
Panel Unit Root Tests ◽  
Panel Unit Root ◽  
Region Data

scholarly journals HAS INFLATION TARGETING BEEN SUCCESSFUL? EVIDENCE FROM UNIT ROOT TESTS

2019 ◽  
Vol 78 (308) ◽  
pp. 120
Author(s):  
Mesut Turkay ◽  
Burak Sencer Atasoy
Keyword(s):  
Time Series ◽  
Unit Root ◽  
Inflation Targeting ◽  
Inflation Rate ◽  
Unit Root Tests ◽  
Policy Framework ◽  
Panel Unit Root Tests ◽  
Panel Unit Root ◽  
The World ◽  
Monetary Policy Framework

<p class="run-in" align="center"><strong>ABSTRACT</strong></p><p>The popularity of inflation targeting has risen in the last decade and the number of countries that adopted inflation targeting as their monetary policy framework surpassed 40 by the end of 2016. This study analyzes whether inflation targeting around the world has been successful in terms of achieving the announced target and keeping inflation rate around it. We argue that a successful inflation targeting necessitates the deviation of inflation from the target be stationary. We employ both time series and panel unit root tests in order to analyze the stationarity properties of deviation of inflation from the target. Results of unit root tests provide evidence in favor of the success of inflation targeting framework around the world.</p><p align="center"><strong> </strong></p><p align="center"><strong>¿HAN SIDO EXITOSAS LAS METAS DE INFLACIÓN? RESULTADOS DE LAS PRUEBAS DE RAÍZ UNITARIA</strong></p><p class="run-in" align="center"><strong>RESUMEN</strong></p>La popularidad de las metas de inflación ha aumentado en la última década y el número de países que adoptaron metas de inflación como su marco de política monetaria sobrepasó los 40 a finales del 2016. Este estudio analiza si las metas de inflación alrededor del mundo han tenido éxito en términos de alcanzar el objetivo anunciado y mantener la tasa de inflación alrededor de su meta. Argumentamos que una meta exitosa de inflación requiere que la desviación de la inflación respecto a la meta sea estacionaria. Empleamos tanto series de tiempo como pruebas de raíz unitaria en panel con el fin de analizar las propiedades estacionarias de la desviación de la inflación en relación con el objetivo. Los resultados de las pruebas de raíz unitaria proporcionan evidencia a favor del éxito del marco de metas de inflación en todo el mundo.

scholarly journals Can the insider–outsider theory explain unemployment hysteresis in OECD countries?

2019 ◽  
Vol 72 (1) ◽  
pp. 149-163
Author(s):  
Dimitrios Bakas ◽  
Yousef Makhlouf
Keyword(s):  
Labour Market ◽  
Empirical Evidence ◽  
Unemployment Rate ◽  
Unit Root ◽  
Oecd Countries ◽  
Unit Root Tests ◽  
Panel Unit Root Tests ◽  
Panel Unit Root ◽  
Hysteretic Behaviour

Abstract Insider–outsider theory is often used as a basis for explaining the hysteretic behaviour of unemployment. Despite this, there is no empirical evidence about the validity of this theory on explaining the persistence of unemployment. This article addresses this gap, using various labour market proxies of insiders’ power for the OECD countries over 1960–2013 and employing panel unit root tests that exploit the information contained in these proxies. The results show that although the unemployment rate exhibits a pronounced hysteretic behaviour in OECD countries, this behaviour is reversed once we account for the insider–outsider proxies. Our findings thus validate the role of the insider–outsider theory as a key source of unemployment hysteresis.

scholarly journals Panel unit root tests and spatial dependence

2007 ◽  
Vol 22 (2) ◽  
pp. 339-360 ◽  
Author(s):  
Badi H. Baltagi ◽  
Georges Bresson ◽  
Alain Pirotte
Keyword(s):  
Unit Root ◽  
Spatial Dependence ◽  
Unit Root Tests ◽  
Panel Unit Root Tests ◽  
Panel Unit Root
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