ICT and productivity: conclusions from the empirical literature

Innovation drives economic competitiveness and sustained long-term economic growth. Especially the emergence and intensive utilization of information and communication technologies (ICTs), which spawned the beginning of the digital economy two decades ago, heavily affected the opportunities and efficiency of how firms produce and provide goods and services. We provide an overview of the empirical literature on ICT and productivity and highlight the main results and methodological differences. The majority of studies indicates that the productivity effect of ICT is indeed positive and significant. However, methodological approaches of how to appropriately estimate the ICT effect matter. While aggregate and sectoral growth accounting exercises suggest stronger differences of the ICT effect between US and Europe, firm-level analyses suggest no significant country differences. Moreover, we shed light on the notion of ICT being a General Propose Technology (GPT) enabling further innovations. Most of the GPT evidence on ICT is found for the US, while evidence for European countries is harder to come by. However, more theoretical and empirical research is needed to better understand spillovers and externalities of ICT and how these technologies transform our economies. (C) 2013 Elsevier B.V. All rights reserved.