Core Deposits and Physical Capital: A Reexamination of Bank Scale Economies and Efficiency with Quasi-Fixed Inputs
比较了不同投入产出设定下银行生产效率的测量结果，发现核心存款和实物资本作为准固定投入时，中小银行的规模经济指标变化大，而大银行则较稳健；效率指标受成本函数设定影响显著。
This paper compares measures of bank production efficiency assuming all bank inputs are completely variable with measures obtained from specifications which take account of the quasi-fixed nature of core deposits and bank physical capital, and the treatment of certain deposits as outputs. The empirical results imply that scale economy measures vary substantially for small to medium-sized banks whereas those for the largest banks are fairly robust to the different specifications. Estimates of economies of scope were found to be invariant to different input/output specifications, whereas efficiency measures varied significantly with changes in the specification of the cost function and with the definition of outputs and inputs. Copyright 1995 by Ohio State University Press.