The impact of trade openness and technology transfer on the relative demand for skilled labor remains a puzzle. The empirical findings surrounding this question are in total contradiction with the prediction of traditional international trade theory. This paper addresses this puzzle by...

This paper studies the asymptotic efficiency in factor models with serially correlated errors and dynamic panel data models with interactive effects. We derive the efficiency bound for the estimation of factors, factor loadings and common parameters that describe the dynamic structure. We use...

This paper aims at measuring the impact of competition on productivity growth of the Tunisian manufacturing sector at the firm level. To investi-gate the impact of competition on productivity we use two procedures. The first one is a two-step procedure; the second one is a one step procedure. We...