摘要:In this article, we propose to evaluate and dissociate the impacts of the economic policies and the technological changes as well as their intrinsic contribution to the evolution of various Tunisian economic aggregates between 1987 and 2008. For this purpose, we have used the double calibration approach in a multi-sector computable general equilibrium model retracing the functioning of the Tunisian economy. The numerical results show that the direct contribution of policies proved to be very important on the evolution of economic aggregates. Whereas, the technological changes and the indirect impacts of policies on the adoption of the best technological processes could prove to be very important. This allowed us to conclude that Tunisia should invest itself more in technological progress by putting in place policies for innovation and incentives for research and development (R&D).