Growth regression revisited: R&D promotes convergence?
ByungWoo Kim ()
Applied Economics, 2012, vol. 44, issue 11, 1347-1362
Barro and Sala-i-Martin (2004) analysed the empirical determinants of growth. They used a cross-sectional empirical framework that considered growth from two kinds of factors, initial levels of steady-state variables and control variables (e.g. investment ratio, infrastructure). Recent literature suggests that Generalized Method of Moments (GMM) estimation of dynamic panel data models produce more efficient and consistent estimates than Ordinary Least Squares (OLS) or pooled regression models. Following Cellini (1997), we also consider co-integration and error-correction methods for the growth regression. We extend the previous research for Asian countries of Kim (2009) to developed countries. Following the implications of semi-endogenous growth theory, we regressed output growth on a constant, 1-year lagged output (initial income) and the determinants of steady-state income (investment rate, population growth, the quadratic (or linear) function of Research and Development (R&D) intensity). The regression suggests faster significant convergence. This contradicts with that of Mankiw et al . (1992), which asserts that the speed is lower when considering broad concept of capital including human capital. The coefficients for the determinants of steady-state income, especially for the quadratic function of R&D intensity, are significant and occur in the expected direction. Our results suggest that adopting appropriate growth policy, an economy can grow more rapidly through transition dynamics or changing fundamentals.
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