Faculté des Sciences Economiques et de Gestion de Sfax/Université Rennes 2-Haute Bretagne,

Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT: The economic literature distinguishes between two different approaches to the contribution of human capital to growth. The first approach assumes that human capital plays the same role in production than physical capital. Human capital is an accumulative factor and increases the overall productivity of factors, exogenous technology. This increased efficiency can offset the diminishing returns of capital and thus to support long-term growth. Thus, the accumulation of capital has a positive effect on economic growth. Rather the second approach suggests a technological dimension of human capital, critical to economic growth. This idea identified by endogenous growth, shows that innovation and technological adaptation are the engines of economic growth in the long term. But the relationship between human capital and technology is highly dependent on the composition of human capital. The above said, we will enrich the literature and study the impact of technological change on economic growth. Econometrically, we base our study on the technique of panel data. An estimate by the method of static panel seems more relevant and a positive effect from the Technological Changes to economic growth seems to be confirmed for 39 developing economies