THE DIFFUSION OF PRODUCTION PROCESSES IN THE US BANKING INDUSTRY - A FINITE MIXTURE APPROACH

This article applies finite mixture distributions to the estimation of cost functions for financial firms through time, The mixture approach allows the estimation of multiple technologies when firms' technology choices are unobservable. Technology switching ('diffusion') and unde rlying technical change are simultaneously evaluated. An application t o large samples of U.S. banks for the years 1982-1986 illustrates the approach. Results suggest banks switch to lower cost production techno logies when unburdened by strict branching regulations. (C) 1997 Elsev ier Science B.V.