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The effects of variance breaks on homogenous panel unit root tests

Herwartz, Helmut; Siedenburg, Florian - 2009

Noting that many economic variables display occasional shifts in their second order moments, we investigate the performance of homogenous panel unit root tests in the presence of permanent volatility shifts. It is shown that in this case, panel unit root tests derived under time invariant...

Persistent link: https://www.econbiz.de/10003887238

A new approach to bootstrap inference in functional coefficient models

Herwartz, Helmut (contributor); Fang, Xu (contributor) - 2007

We introduce a new, factor based bootstrap approach which is robust under heteroskedastic error terms for inference in functional coefficient models. Modeling the functional coefficient parametrically, the bootstrap approximation of an F statistic is shown to hold asymptotically. In simulation...

Persistent link: https://www.econbiz.de/10003477963

A functional coefficient model view of the Feldstein-Horioka puzzle

Herwartz, Helmut (contributor); Fang, Xu (contributor) - 2007

What does the saving-investment (SI) relation really measure and how should the (SI) relation be measured? These are two of the most discussed issues triggered by the so called Feldstein-Horioka puzzle. Based on panel data we introduce a new variant of functional coefficient models that allow to...

Persistent link: https://www.econbiz.de/10003477959

Modelling the Fisher hypothesis: World wide evidence

Herwartz, Helmut (contributor); … - 2006

In this paper we follow an empirical approach to examine the implications of the Fisher hypothesis, namely cointegration linking interest rates and inflation, and stationarity of the real interest rate implying in turn homogeneity of the potential equilibrium relation. The considered sample is...

Persistent link: https://www.econbiz.de/10003296858

Is There a Debt-Threshold Effect on Output Growth?

Chudik, Alexander - 2015

This paper studies the long-run impact of public debt expansion on economic growth and investigates whether the debt-growth relation varies with the level of indebtedness. Our contribution is both theoretical and empirical. On the theoretical side, we develop tests for threshold effects in the...

Persistent link: https://www.econbiz.de/10013019040

The Growth Effect of Democracy : Is It Heterogenous and How Can it Be Estimated?

Persson, Torsten; Tabellini, Guido - 2021

We estimate the effect of political regime transitions on growth with semi-parametric methods, combining difference in differences with matching, that have not been used in macroeconomic settings. Our semi-parametric estimates suggest that previous parametric estimates may have seriously...

Persistent link: https://www.econbiz.de/10013317020

Dissecting the PPP Puzzle : The Unconventional Roles of Nominal Exchange Rate and Price Adjustments

Cheung, Yin-Wong; Lai, Kon S.; Bergman, U. Michael - 2021

The conventional view, as expounded by sticky-price models, is that price adjustment determines the PPP reversion rate. This study examines the mechanism by which PPP deviations are corrected. Nominal exchange rate adjustment, not price adjustment, is shown to be the key engine governing the...

Persistent link: https://www.econbiz.de/10013319983

A Cross-Country Empirical Analysis of International Reserves

Cheung, Yin-Wong - 2013

Using data from more than 100 economies for the period of 1975 to 2005, we conduct an extensive empirical analysis of the determinants of international reserve holdings. Four groups of determinants, namely, traditional macro variables, financial variables, institutional variables, and dummy...

Persistent link: https://www.econbiz.de/10013095899

Semiparametric approaches to the prediction of conditional correlation matrices in finance

Golosnoy, Vasyl (contributor); Herwartz, Helmut (contributor) - 2006

We consider the problem of ex-ante forecasting conditional correlation patterns using ultra high frequency data. Flexible semiparametric predictors referring to the class of dynamic panel and dynamic factor models are adopted for daily forecasts. The parsimonious set up of our approach allows to...

Persistent link: https://www.econbiz.de/10003516408

An Empirical Growth Model for Major Oil Exporters

Esfahani, Hadi Salehi; Mohaddes, Kamiar; Pesaran, M. Hashem - 2021

-run output equation with a coefficient equal to the share of capital (α). The long-run theory is tested using quarterly data on … results support the long-run theory. The existence of long-run relations between real output, foreign output and real oil … steadily over the past three decades, the theory suggests that the effect of oil income on the economy’s steady state growth …

Persistent link: https://www.econbiz.de/10013315924