A pesar de las diferencias entre las teorías neoclásicas y del crecimiento endógeno, ambas comparten una preocupación casi exclusiva por los factores de oferta, relegando la demanda a un plano secundario. Reivindicar el papel que desempeñan los factores de demanda en el crecimiento de largo plazo es, precisamente, el núcleo principal del presente trabajo. Para ello, éste se ha dividido básicamente en dos partes. En la primera se analiza la influencia de la demanda intersectorial y, en la segunda, el papel de la demanda agregada.
Despite their discrepancies, both the neo-classical theory and the endogenous growth theory are supply-side oriented approaches to growth and no role is given to demand. If a country has factors to be employed and a production function, it is a assumed that it will grow and no attention needs to be paid to where the produced goods are consumed. The aim of this paper is to show how demand can play a crucial role in long-run growth. In the first section the role of intersectorial demand will be analysed, while the second section is devoted to stress how aggregate demand can determine long-run dynamics.