We extend the agglomeration economies literature (1) by comparing the effects on productivity of geographic concentrations in IT activity and all other activity and (2) by distinguishing between the effects of IT-producing and IT-using sectors on productivity. Four measures of agglomeration for...

In the paper we wish to examine if the firms that innovate know a higher growth than the firm that do not. We use diverse waves of CIS for the French industries over the period 1992-2004 and carry out different models and new econometric methods (quantile regression). Our main findings are that...