Cronin, Francis J.; Parker, Edwin B.; Colleran, Elisabeth K. - In: Telecommunications Policy 15 (1991) 6, pp. 529-535
Time series analyses of 31 years of US data (1958-88, inclusive) were consistent with two causal hypotheses. First, the level of US economic activity at any point in time is a reliable predictor ('cause') of the amount of US telecommunications investment at a later point in time. Second, the...