Using data on the US and EU top R&D spenders from 2004 until 2012, this paper investigates the sources of the US/EU … in the high-tech industries), and this contributes to explaining the higher productivity of US firms. Conversely, EU …-tech sectors. Our results also show that the US/EU productivity gap has worsened during the crisis period, as the EU companies have …

these transatlantic differences may be related to the different sectoral structures in the US and the EU, we differentiated … change ; US ; EU …