Size, age and activity sector on the growth of the small and medium firm size

Although corporate growth is one of the most researched subjects in different areas of economic science, it is not currently based on a general theory or generally accepted conceptual definition. In spite of this, growth has usually been considered an essential objective for a firm, contributing to its survival and competitiveness. This work aims to provide a more in-depth study of the factors that condition the growth of small and medium-sized firms, by offering some empirical evidence that will contribute to its modelling, especially in relation to the influence of size, age and activity sector. In this context, we shall attempt to contrast the validity of Gibrat's approach and the Learning Theory.