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Author (up) Akhavein, J.D.; Swamy, P.A.V.B.; Taubman, S.B.; Singamsetti, R.N. doi  openurl
  Title A General Method of Deriving the Inefficiencies of Banks from a Profit Function Type
  Year 1997 Publication Journal of Productivity Analysis Abbreviated Journal  
  Volume 8 Issue 1 Pages 71-93  
  Keywords Banks; Profit function; Hotelling-like lemma; X-inefficiencies  
  Abstract This article develops a new method of estimating inefficiencies in joint production and shows that unlike the approaches utilized in the previous studies of inefficiency, this method maintains a consistent relationship between the error term of a profit function and the error terms of its price derivatives. A useful by-product of the method is a proof of a Hotelling-like lemma that relates stochastic input demand and output supply functions to stochastic profit functions. While the previous studies fit a single frontier to data on all firms, this paper estimates a frontier unique to every observed firm to allow each one to have a different potential of achieving maximal levels of profit. The new method is applied in the analysis of annual data, 1984-1989, for U.S. commercial banks. Both the analytical and numerical results of the paper show that the residual that the previous studies attribute to inefficiency includes the effects of excluded variables and of inaccuracies in the specified functional forms. Once accurate estimates of these effects are subtracted from the residual, the distortions in the measured inefficiencies should be considerably reduced. Consequently, this article considers how such estimates might be obtained.  
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  Notes Approved  
  Call Number Admin @ admin @ AkhaveinSwamyTaubmanSingamsetti1997 Serial 968  
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