On Network Competition And The Solow Paradox: Evidence From Us Banks
In this paper we develop a model to examine the effect of information technology (IT) in the banking industry. IT can reduce operational cost and create network externality. Empirical studies, however, have shown inconsistency, the so-called Solow paradox, which we explain by stressing the heterogeneity in banking services. In a differentiated model, we characterize the conditions to identify these two effects and explain how the two seemingly positive effects turn negative. Using a panel data set of 68 US banks over 1986-2005, our results show that the profitability effect of IT spending is negative, reflecting a negative network competition effect in the banking industry. Copyright � 2008 The Authors. Journal compilation � 2008 Blackwell Publishing Ltd and The University of Manchester.
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Volume (Year): 76 (2008)
Issue (Month): s1 (09)
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