Impacts of Mobile Phone Subscription, Internet Users, and Broadband Adoption on National Output in South Korea

Applying the macroeconomic model developed by Romer (2000), this paper finds that more mobile phone subscriptions, Internet users, and broadband adoption raise output (real GDP) in South Korea. In addition, fiscal expansion and a higher expected inflation rate reduce output whereas real appreciation of the Korean won increases output. Therefore, governments should support investments in ICT (information and communication technologies) in order to enhance output.