article is dedicated to this question through the analysis of the first innovation survey of Tunisian firms. In particular, it … Probit models) and non-parametrical regression trees on the results of the first community innovation survey in Tunisia. We … find that the innovation behavior of the three categories of firms is strongly contrasted. Our results show firms that …

In this paper I consider the 1991 Grossman-Helpman model which analyses the role of innovation on growth. The model …-Helpman model unchanged, I analyse the influence of the rate of innovation on three variables: the rate of growth of final output …