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Monday, July 21, 2008

 
It's Published

Testing for country heterogeneity in growth models using a finite mixture approach
Marco Alfò 1, Giovanni Trovato 2 *, Robert J. Waldmann 2
1Dipartimento di Statistica, Probabilità e Statistiche Applicate, Sapienza Università di Roma, Rome, Italy
2Dipartimento di Economia e Istituzioni, Università di Roma Tor Vergata, Rome Italy
email: Giovanni Trovato (giovanni.trovato@uniroma2.com)

*Correspondence to Giovanni Trovato, Dipartimento di Economia e Istituzioni, Università di Roma Tor Vergata, via Columbia 2, 00133, Rome Italy.

Abstract
We define a bivariate mixture model to test whether economic growth can be considered exogenous in the Solovian sense. For this purpose, the multivariate mixture approach proposed by Alfò and Trovato is applied to the Bernanke and Gürkaynak extension of the Solow model. We find that the explanatory power of the Solow growth model is enhanced, since growth rates are not statistically significantly associated with investment rates, when cross-country heterogeneity is considered. Moreover, no sign of convergence to a single equilibrium is found. Copyright © 2008 John Wiley & Sons, Ltd.


Journal of Applied Econometrics
Volume 23 Issue 4, Pages 487 - 514

Published Online: 2 Jun 2008

Copyright © 2008 John Wiley & Sons, Ltd.

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