dispersion, and 2) the correlation between within-firm skill dispersion and productivity is positive in industries with higher …: firms in the "skill complementarity" industries profit from hiring workers of similar skill level, whereas firms in the … produces a robust classification of industries into the distinct complementarity and substitutability groups. Our study unveils …

In order to assess the productivity effects of information and communication technologies (ICT), regressions based on …-GMM estimator yields evidence for significant productivity effects of ICT which are substantially smaller though than those …