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Diagnostic tests for homoskedasticity in spatial cross-sectional or panel models
Baltagi, Badi H.; Pirotte, Alain; Yang, Zhenlin - 2020
We propose an Adjusted Quasi-Score (AQS) method for constructing tests for homoskedasticity in spatial econometric models. We first obtain an AQS function by adjusting the score-type function from the given model to achieve unbiasedness, and then develop an Outer-Product-of-Martingale-Difference...
Persistent link: https://www.econbiz.de/10012305035
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High-Dimensional Panel Data with Time Heterogeneity : Estimation and Inference
Zhu, Yinchu - 2017
We consider high-dimensional panel data models (large cross sections and long time horizons) with interactive fixed effects and allow the covariate/slope coefficients to vary over time without any restrictions. The parameter of interest is the vector that contains all the covariate effects...
Persistent link: https://www.econbiz.de/10012970967
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Panel data gravity models of international trade
Baltagi, Badi H.; Egger, Peter; Pfaffermayr, Michael - 2014
One of the oldest and largest literatures in empirical economics is concerned with the estimation of demand and supply of goods, services, and factors across national or subnational borders (see Leamer and Levinsohn, 1995). The respective empirical models specified and estimated are often...
Persistent link: https://www.econbiz.de/10010237192
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Latent Factor Analysis in Short Panels
Fortin, Alain-Philippe; Gagliardini, Patrick; Scaillet, … - 2023
We develop inferential tools for latent factor analysis in short panels. The pseudo maximum likelihood setting under a large cross-sectional dimension n and a fixed time series dimension T relies on a diagonal T x T covariance matrix of the errors without imposing sphericity or Gaussianity. We...
Persistent link: https://www.econbiz.de/10014350141
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Getting PPP right : identifying mean-reverting real exchange rates in panels
Chortareas, Georgios E. (contributor);  … - 2008
Recent advances in testing for the validity of Purchasing Power Parity (PPP) focus on the time series properties of real exchange rates in panel frameworks. One weakness of such tests, however, is that they fail to inform the researcher as to which cross-section units are stationary. As a...
Persistent link: https://www.econbiz.de/10003740322
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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
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Are PPP tests erratically behaved? : some panel evidence
Caporale, Guglielmo Maria (contributor);  … - 2006
This paper examines whether, in addition to standard unit root and cointegration tests, panel approaches also produce test statistics behaving erratically when applied to tests for PPP. We show that if appropriate tests (which are robust to cross-sectional dependence and more powerful than...
Persistent link: https://www.econbiz.de/10003394591
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For which countries did PPP hold? : a multiple testing approach
Hanck, Christoph (contributor) - 2006
We use recent advances in multiple testing to identify the countries for which Purchasing Power Parity (PPP) held over the last century. The approach controls the multiplicity problem inherent in simultaneously testing for PPP on several time series, thereby avoiding spurious rejections. It has...
Persistent link: https://www.econbiz.de/10003394646
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Likelihood-based cointegration analysis in panels of vector error correction models
Groen, Jan J. J.; Kleibergen, Frank - 1999 - This version: July 28, 1999
We propose in this paper a likelihood-based framework forcointegration analysis in panels of a fixed number of vector errorcorrection models. Maximum likelihood estimators of thecointegrating vectors are constructed using iterated GeneralizedMethod of Moments estimators. Using these estimators...
Persistent link: https://www.econbiz.de/10011302148
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IV-based cointegration testing in dependent panels with time-varying variance
Demetrescu, Matei; Hanck, Christoph; Tarcolea, Adina Ioana - 2012 - This version: November 10, 2011
heteroskedasticity as long as global homoskedasticity conditions are fulfilled, they are certainly affected when the innovations exhibit … both global heteroskedasticity and cross-unit dependence, we start by adapting the nonlinear instruments method proposed … of the test statistic as long as the t-type statistics are computed with White heteroskedasticity-consistent standard …
Persistent link: https://www.econbiz.de/10009672473