We Just Averaged Over Two Trillion Cross-Country Growth Regressions
20 Pages Posted: 15 Feb 2006
Date Written: July 1999
We investigate the issue of model uncertainty in cross-country growth regressions using Bayesian model averaging (BMA). We find that the posterior probability is distributed among many models, suggesting the superiority of BMA over any single model. Out-of-sample predictive results support that claim. In contrast with Levine and Renelt (1992), our results broadly support the more "optimistic" conclusion of Sala-i-Martin (1997b), namely, that some variables are important regressors for explaining cross-country growth patterns. However, the variables we identify as most useful for growth regression differ substantially from Sala-i-Martin`s results.
Keywords: Bayesian model averaging choice of regressors economic growth Markov chain Monte Carlo prediction
JEL Classification: O49 C11 C52
Suggested Citation: Suggested Citation