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Inefficient or just different? Effects of heterogeneity on bank efficiency scores

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  • Bos, Jaap W. B.
  • Heid, Frank
  • Koetter, Michael
  • Kolari, James W.
  • Kool, Clemens J. M.

Abstract

In this paper, we show the importance of accounting for heterogeneity among sample firms in stochastic frontier analysis. For a fairly homogenous sample of German savings and cooperative banks, we analyze how alternative theoretical assumptions regarding the nature of heterogeneity can be modeled and the extent to which the respective empirical specifications affect estimated efficiency levels and rankings. We find that the level of efficiency scores is affected in the case of both cost and profitmodels. On the cost side especially, level and rank correlations show that different specifications identify different banks as being best or worst performers. Our main conclusion is that efficiency studies in general and bank efficiency studies in particular should account for heterogeneity across sample firms. Especially when efficiency measures are employed for policy purposes, a careful choice of models and transparency regarding maximization methods are essential to be able to make inferences about managerial behavior.

Suggested Citation

  • Bos, Jaap W. B. & Heid, Frank & Koetter, Michael & Kolari, James W. & Kool, Clemens J. M., 2005. "Inefficient or just different? Effects of heterogeneity on bank efficiency scores," Discussion Paper Series 2: Banking and Financial Studies 2005,15, Deutsche Bundesbank.
    • Handle: RePEc:zbw:bubdp2:4270
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    1. Mester, Loretta J., 1997. "Measuring efficiency at U.S. banks: Accounting for heterogeneity is important," European Journal of Operational Research, Elsevier, vol. 98(2), pages 230-242, April.
    2. Humphrey, David B & Pulley, Lawrence B, 1997. "Banks' Responses to Deregulation: Profits, Technology, and Efficiency," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(1), pages 73-93, February.
    3. Joseph P. Hughes & Loretta J. Mester, "undated". "A Quality and Risk-Adjusted Cost Function for Banks: Evidence on the "Too-Big-To-Fail" Doctrine," Rodney L. White Center for Financial Research Working Papers 25-92, Wharton School Rodney L. White Center for Financial Research.
    4. Berger, Allen N. & Humphrey, David B., 1997. "Efficiency of financial institutions: International survey and directions for future research," European Journal of Operational Research, Elsevier, vol. 98(2), pages 175-212, April.
    5. Lang, Gunter & Welzel, Peter, 1996. "Efficiency and technical progress in banking Empirical results for a panel of German cooperative banks," Journal of Banking & Finance, Elsevier, vol. 20(6), pages 1003-1023, July.
    6. Altunbas, Yener & Evans, Lynne & Molyneux, Philip, 2001. "Bank Ownership and Efficiency," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 33(4), pages 926-954, November.
    7. repec:cor:louvrp:-834 is not listed on IDEAS
    8. Mester, Loretta J., 1993. "Efficiency in the savings and loan industry," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 267-286, April.
    9. Berger, Allen N. & Mester, Loretta J., 1997. "Inside the black box: What explains differences in the efficiencies of financial institutions?," Journal of Banking & Finance, Elsevier, vol. 21(7), pages 895-947, July.
    10. Schmidt, Peter & Sickles, Robin C, 1984. "Production Frontiers and Panel Data," Journal of Business & Economic Statistics, American Statistical Association, vol. 2(4), pages 367-374, October.
    11. Kumbhakar, Subal C & Ghosh, Soumendra & McGuckin, J Thomas, 1991. "A Generalized Production Frontier Approach for Estimating Determinants of Inefficiency in U.S. Dairy Farms," Journal of Business & Economic Statistics, American Statistical Association, vol. 9(3), pages 279-286, July.
    12. George J. Benston, 1965. "Branch Banking And Economies Of Scale," Journal of Finance, American Finance Association, vol. 20(2), pages 312-331, May.
    13. Battese, George E. & Corra, Greg S., 1977. "Estimation Of A Production Frontier Model: With Application To The Pastoral Zone Of Eastern Australia," Australian Journal of Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 21(3), pages 1-11, December.
    14. Baltagi, Badi H & Griffin, James M, 1988. "A General Index of Technical Change," Journal of Political Economy, University of Chicago Press, vol. 96(1), pages 20-41, February.
    15. Mountain, Dean C. & Thomas, Hugh, 1999. "Factor price misspecification in bank cost function estimation," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 9(2), pages 163-182, April.
    16. Sealey, Calvin W, Jr & Lindley, James T, 1977. "Inputs, Outputs, and a Theory of Production and Cost at Depository Financial Institutions," Journal of Finance, American Finance Association, vol. 32(4), pages 1251-1266, September.
    17. Dominique DEPRINS & Léopold SIMAR, 1989. "Estimating Technical Inefficiencies With Correction For Environmental Conditions," Annals of Public and Cooperative Economics, Wiley Blackwell, vol. 60(1), pages 81-102, January.
    18. Maudos, Joaquin & Pastor, Jose M. & Perez, Francisco & Quesada, Javier, 2002. "Cost and profit efficiency in European banks," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 12(1), pages 33-58, February.
    19. Altunbas, Yener & Goddard, John & Molyneux, Phil, 1999. "Technical change in banking," Economics Letters, Elsevier, vol. 64(2), pages 215-221, August.
    20. Altunbas, Y. & Gardener, E. P. M. & Molyneux, P. & Moore, B., 2001. "Efficiency in European banking," European Economic Review, Elsevier, vol. 45(10), pages 1931-1955, December.
    21. Bauer, Paul W. & Berger, Allen N. & Ferrier, Gary D. & Humphrey, David B., 1998. "Consistency Conditions for Regulatory Analysis of Financial Institutions: A Comparison of Frontier Efficiency Methods," Journal of Economics and Business, Elsevier, vol. 50(2), pages 85-114, March.
    22. Waldman, Donald M., 1982. "A stationary point for the stochastic frontier likelihood," Journal of Econometrics, Elsevier, vol. 18(2), pages 275-279, February.
    23. Jondrow, James & Knox Lovell, C. A. & Materov, Ivan S. & Schmidt, Peter, 1982. "On the estimation of technical inefficiency in the stochastic frontier production function model," Journal of Econometrics, Elsevier, vol. 19(2-3), pages 233-238, August.
    24. Lang, Gunter & Welzel, Peter, 1999. "Mergers among German Cooperative Banks: A Panel-Based Stochastic Frontier Analysis," Small Business Economics, Springer, vol. 13(4), pages 273-286, December.
    25. Berger, Allen N. & Hunter, William C. & Timme, Stephen G., 1993. "The efficiency of financial institutions: A review and preview of research past, present and future," Journal of Banking & Finance, Elsevier, vol. 17(2-3), pages 221-249, April.
    26. Stevenson, Rodney E., 1980. "Likelihood functions for generalized stochastic frontier estimation," Journal of Econometrics, Elsevier, vol. 13(1), pages 57-66, May.
    27. Greene, William H., 1990. "A Gamma-distributed stochastic frontier model," Journal of Econometrics, Elsevier, vol. 46(1-2), pages 141-163.
    28. George E. Battese & Greg S. Corra, 1977. "Estimation Of A Production Frontier Model: With Application To The Pastoral Zone Of Eastern Australia," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 21(3), pages 169-179, December.
    29. George Battese & D. Rao & Christopher O'Donnell, 2004. "A Metafrontier Production Function for Estimation of Technical Efficiencies and Technology Gaps for Firms Operating Under Different Technologies," Journal of Productivity Analysis, Springer, vol. 21(1), pages 91-103, January.
    30. Mr. David Hauner, 2004. "Explaining Efficiency Differences Among Large German and Austrian Banks," IMF Working Papers 2004/140, International Monetary Fund.
    31. Günter Lang & Peter Welzel, 1998. "Technology and Cost Efficiency in Universal Banking A “Thick Frontier”-Analysis of the German Banking Industry," Journal of Productivity Analysis, Springer, vol. 10(1), pages 63-84, July.
    32. Aigner, Dennis & Lovell, C. A. Knox & Schmidt, Peter, 1977. "Formulation and estimation of stochastic frontier production function models," Journal of Econometrics, Elsevier, vol. 6(1), pages 21-37, July.
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    Cited by:

    1. Koetter, Michael & Wedow, Michael, 2010. "Finance and growth in a bank-based economy: Is it quantity or quality that matters?," Journal of International Money and Finance, Elsevier, vol. 29(8), pages 1529-1545, December.
    2. Francesco Aiello & Graziella Bonanno, 2013. "Profit and cost efficiency in the Italian banking industry (2006-2011)," Economics and Business Letters, Oviedo University Press, vol. 2(4), pages 190-205.
    3. Sarmiento, Miguel & Galán, Jorge E., 2014. "Heterogeneous effects of risk-taking on bank efficiency : a stochastic frontier model with random coefficients," DES - Working Papers. Statistics and Econometrics. WS ws142013, Universidad Carlos III de Madrid. Departamento de Estadística.
    4. Horst Gischer & Toni Richter, 2014. "Produktivitätsmessung von Banken: die Cost Income Ratio – ein belastbares Performancemaß?," FEMM Working Papers 140008, Otto-von-Guericke University Magdeburg, Faculty of Economics and Management.
    5. Koetter, Michael, 2006. "The stability of efficiency rankings when risk-preferences and objectives are different," Discussion Paper Series 2: Banking and Financial Studies 2006,08, Deutsche Bundesbank.
    6. Ramona Busch & Christoph Memmel, 2016. "Quantifying the components of the banks’ net interest margin," Financial Markets and Portfolio Management, Springer;Swiss Society for Financial Market Research, vol. 30(4), pages 371-396, November.
    7. Joseph P. Hughes & Loretta J. Mester, 2008. "Efficiency in banking: theory, practice, and evidence," Working Papers 08-1, Federal Reserve Bank of Philadelphia.
    8. Hughes, Joseph P. & Mester, Loretta J., 2013. "Measuring the Performance of Banks: Theory, Practice, Evidence, and Some Policy Implications," Working Papers 13-28, University of Pennsylvania, Wharton School, Weiss Center.
    9. Bos, J.W.B. & Schmiedel, H., 2007. "Is there a single frontier in a single European banking market?," Journal of Banking & Finance, Elsevier, vol. 31(7), pages 2081-2102, July.
    10. Joseph P. Hughes & Loretta J. Mester, 2018. "The Performance of Financial Institutions: Modeling, Evidence, and Some Policy Implications," Departmental Working Papers 201805, Rutgers University, Department of Economics.
    11. Michael Koetter, 2006. "Measurement Matters—Alternative Input Price Proxies for Bank Efficiency Analyses," Journal of Financial Services Research, Springer;Western Finance Association, vol. 30(2), pages 199-227, October.
    12. Graziella Bonanno, 2016. "ICT and R&D as inputs or efficiency determinants? Analysing Italian manufacturing firms (2007–2009)," Eurasian Business Review, Springer;Eurasia Business and Economics Society, vol. 6(3), pages 383-404, December.
    13. Elisabetta Fiorentino & Heinz Herrmann, 2009. "Effizienz und Wettbewerb im deutschen Bankensektor," Vierteljahrshefte zur Wirtschaftsforschung / Quarterly Journal of Economic Research, DIW Berlin, German Institute for Economic Research, vol. 78(1), pages 114-126.
    14. Graziella Bonanno, 2014. "The Efficiency of the Italian Banking System over 2006-2011. An Application of the Stochastic Frontier Approach," Rivista italiana degli economisti, Società editrice il Mulino, issue 2, pages 277-306.
    15. Bonanno, Graziella, 2012. "L’efficienza del sistema bancario italiano dal 2006 al 2010. Un’applicazione delle frontiere stocastiche [The Efficiency of Italian Banking System over 2006-2010. An Application of the Stochastic F," MPRA Paper 42831, University Library of Munich, Germany.
    16. Faiza Omer Elmahgop, 2024. "Intellectual Capital and Bank Stability in Saudi Arabia: Navigating the Dynamics in a Transforming Economy," Sustainability, MDPI, vol. 16(10), pages 1-23, May.
    17. Bonanno, Graziella, 2014. "ICT and R&D as inputs or efficiency determinants? Analysing the manufacturing Italian firms over the 2007-2009," MPRA Paper 57640, University Library of Munich, Germany.
    18. Ihsen Abid & Mohamed Goaied, 2015. "Consideration of technological and environmental heterogeneity in cost efficiency analysis," International Review of Applied Economics, Taylor & Francis Journals, vol. 29(5), pages 650-676, September.

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    More about this item

    Keywords

    Heterogeneity; X-efficiency; benchmarking; bank production;
    All these keywords.

    JEL classification:

    • G34 - Financial Economics - - Corporate Finance and Governance - - - Mergers; Acquisitions; Restructuring; Corporate Governance
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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