Wheelock, David C; Wilson, Paul W - In: Journal of Money, Credit and Banking 31 (1999) 2, pp. 212-34
Studies often find that, on average, U.S. commercial banks are quite inefficient, and the authors find that banks became more technically inefficient between 1984 and 1993. From a new decomposition of the Malmquist productivity index into changes in pure-technical and scale efficiency, as well...