Miguel-Ángel Galindo Martín, Joaquín Guzman Cuevas and Domingo Ribeiro Soriano University of Castilla-La Mancha, Albacete, Spain University of Sevilla, Sevilla, Spain University of Valencia, Valencia, Spain The economic growth and the progress of the nations have been two issues that have worried to the economists during centuries. The classical eco- mics books have developed different theories and considered several f- tors that could explain those processes. Unfortunately, a single answer has not been obtained and nowadays economists try also to achieve a response to the mechanism of economic growth. Economic growth has been considered as one of the most relevant e- nomic policy. As it is