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Heterogeneity and cross-sectional dependence in panels: Heterogeneous vs. homogeneous estimators

Akgun, O., Pirotte, A. & Urga, G. (2021). Heterogeneity and cross-sectional dependence in panels: Heterogeneous vs. homogeneous estimators. Revue d'Economie Politique, Vol. 1(1), pp. 19-55. doi: 10.3917/redp.311.0025


This paper focuses on the comparison of homogeneous and heterogeneous panel data estimators, including partially heterogeneous ones, in presence of cross-sectional dependence generated by common factors and spatial error dependence. Our specifications allow us to con-sider and contrast weak cross-sectional dependence and strong cross-sectional dependence in a general linear heterogeneous panel data model. An overview of the estimation procedures, including heterogeneous, homogeneous and partially heterogeneous estimators, is presented. Then, an extensive Monte Carlo study is conducted using a general framework encompassing recent contributions in the literature especially in terms of considering common factors and spatial dependence simultaneously. Our simulation results show that, even for small individual and time dimensions, heterogeneous estimators perform better in terms of bias, root mean squared error, size and size adjusted power compared to homogeneous estimators. Last, the superiority of the heterogeneous estimators is confirmed by an empirical application relating fiscal decentralization and government size in 22 OECD countries over the period 1973-2017.

Publication Type: Article
Additional Information: This article has been published in Revue d'Economie Politique DOI: . All rights reserved.
Publisher Keywords: Panel data models, heterogeneity, homogeneity, cross-sectional dependence, spatial panel, common factors, forecasting.
Subjects: H Social Sciences > HG Finance
Departments: Bayes Business School > Finance
SWORD Depositor:
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