Using a time series of fifty years, the relationships between investment by telecommunications firms and Gross Domestic Product in the United States are examined. Granger-Sims causality tests are conducted, with proper allowance for both the non-stationarity of the data and lag length. These...

Perhaps the most frequently cited goal of telecommunications policy is the promotion of infrastructure investment, an outcome of some statutory importance. Investment in telecoms infrastructure, in turn, stimulates jobs, which is another key target of public policy. Naturally, in the heated...