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An Empirical Analysis of Technical Efficiency: The Role of IT Intensity and Competition

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  • Young Bong Chang

    (School of Business, Sungkyunkwan University, Seoul, Republic of Korea 110-745)

  • Vijay Gurbaxani

    (Center for Digital Transformation, The Paul Merage School of Business, University of California, Irvine, California 92697)

Abstract

We analyze the impact of information technology (IT) on the technical efficiency of firms in the context of their observed competitive settings. Because competition can be a driver of efficiency and industries display varying degrees of competitiveness, firm-level efficiency is likely to display considerable heterogeneity. To shed light on these questions, we analyze the economic impact of IT on technical efficiency, a key component of efficiency, in heterogeneous competitive settings. Our study employs a number of econometric techniques, including a stochastic frontier and a generalized method of moments approach, on data from firms in a wide cross-section of industries. We find, after controlling for firm-level heterogeneity and potential endogeneity, that IT is positively associated with gains in technical efficiency but its impact is moderated by the degree of competition. Firms display large variation in their levels of technical efficiency partly because of the heterogeneous market competitiveness conditions they face. In more competitive industries, firms tend to deploy IT more intensively and use it more efficiently. Our study makes a distinct contribution relative to prior studies that have focused on the productivity impacts of IT while assuming perfect competition and not allowing for potential heterogeneity in firm-level efficiency. Overall, our results demonstrate that IT and competition are significant determinants of gains in technical efficiency and provide insight into how competition affects the returns to IT investment.

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  • Young Bong Chang & Vijay Gurbaxani, 2013. "An Empirical Analysis of Technical Efficiency: The Role of IT Intensity and Competition," Information Systems Research, INFORMS, vol. 24(3), pages 561-578, September.
    • Handle: RePEc:inm:orisre:v:24:y:2013:i:3:p:561-578
    DOI: 10.1287/isre.1120.0438
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    as
    1. Brynjolfsson, Erik, 2013. "Wired for Innovation: How Information Technology Is Reshaping the Economy," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262518611, April.
    2. Christopher F Baum & Mark E. Schaffer & Steven Stillman, 2003. "Instrumental variables and GMM: Estimation and testing," Stata Journal, StataCorp LP, vol. 3(1), pages 1-31, March.
    3. repec:ucp:bknber:9780226304557 is not listed on IDEAS
    4. Jan Boone, 2000. "Competitive Pressure: The Effects on Investments in Product and Process Innovation," RAND Journal of Economics, The RAND Corporation, vol. 31(3), pages 549-569, Autumn.
    5. Barros, Carlos Pestana, 2008. "Efficiency analysis of hydroelectric generating plants: A case study for Portugal," Energy Economics, Elsevier, vol. 30(1), pages 59-75, January.
    6. Tom Kompas & Tuong Nhu Che & R. Quentin Grafton, 2004. "Technical efficiency effects of input controls: evidence from Australia's banana prawn fishery," Applied Economics, Taylor & Francis Journals, vol. 36(15), pages 1631-1641.
    7. Schmidt, Peter & Lovell, C. A. Knox, 1980. "Estimating stochastic production and cost frontiers when technical and allocative inefficiency are correlated," Journal of Econometrics, Elsevier, vol. 13(1), pages 83-100, May.
    8. George W. Wilson & Joseph M. Jadlow, 1982. "Competition, Profit Incentives, and Technical Efficiency in the Provision of Nuclear Medicine Services," Bell Journal of Economics, The RAND Corporation, vol. 13(2), pages 472-482, Autumn.
    9. Susanto Basu & John G. Fernald & Nicholas Oulton & Sylaja Srinivasan, 2004. "The Case of the Missing Productivity Growth, or Does Information Technology Explain Why Productivity Accelerated in the United States but Not in the United Kingdom?," NBER Chapters, in: NBER Macroeconomics Annual 2003, Volume 18, pages 9-82, National Bureau of Economic Research, Inc.
    10. Casu, Barbara & Girardone, Claudia, 2009. "Testing the relationship between competition and efficiency in banking: A panel data analysis," Economics Letters, Elsevier, vol. 105(1), pages 134-137, October.
    11. José-Miguel Gaspar, 2006. "Idiosyncratic Volatility and Product Market Competition," The Journal of Business, University of Chicago Press, vol. 79(6), pages 3125-3152, November.
    12. Lorraine Dearden & Howard Reed & John Van Reenen, 2006. "The Impact of Training on Productivity and Wages: Evidence from British Panel Data," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 68(4), pages 397-421, August.
    13. Oum, Tae Hoon & Zhang, Yimin, 1995. "Competition and Allocative Efficiency: The Case of the U.S. Telephone Industry," The Review of Economics and Statistics, MIT Press, vol. 77(1), pages 82-96, February.
    14. Robert D. Willig, 1987. "Corporate Governance and Market Structure," Palgrave Macmillan Books, in: Assaf Razin & Efraim Sadka (ed.), Economic Policy in Theory and Practice, chapter 13, pages 481-503, Palgrave Macmillan.
    15. Hay, Donald A & Liu, Guy S, 1997. "The Efficiency of Firms: What Difference Does Competition Make?," Economic Journal, Royal Economic Society, vol. 107(442), pages 597-617, May.
    16. James Kirkley & Dale Squires & Ivar Strand, 1998. "Characterizing Managerial Skill and Technical Efficiency in a Fishery," Journal of Productivity Analysis, Springer, vol. 9(2), pages 145-160, March.
    17. Ross Levine & Norman Loayza & Thorsten Beck, 2002. "Financial Intermediation and Growth: Causality and Causes," Central Banking, Analysis, and Economic Policies Book Series, in: Leonardo Hernández & Klaus Schmidt-Hebbel & Norman Loayza (Series Editor) & Klaus Schmidt-Hebbel (Se (ed.),Banking, Financial Integration, and International Crises, edition 1, volume 3, chapter 2, pages 031-084, Central Bank of Chile.
    18. Lindenberg, Eric B & Ross, Stephen A, 1981. "Tobin's q Ratio and Industrial Organization," The Journal of Business, University of Chicago Press, vol. 54(1), pages 1-32, January.
    19. Jean Tirole, 1988. "The Theory of Industrial Organization," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262200716, April.
    20. Oliver D. Hart, 1983. "The Market Mechanism as an Incentive Scheme," Bell Journal of Economics, The RAND Corporation, vol. 14(2), pages 366-382, Autumn.
    21. Dale W. Jorgenson & Kevin J. Stiroh, 2000. "Raising the Speed Limit: U.S. Economic Growth in the Information Age," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 31(1), pages 125-236.
    22. repec:sae:niesru:v:111:y::i:1:p:48-61 is not listed on IDEAS
    23. Kaparakis, Emmanuel I & Miller, Stephen M & Noulas, Athanasios G, 1994. "Short-Run Cost Inefficiency of Commercial Banks: A Flexible Stochastic Frontier Approach," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 26(4), pages 875-893, November.
    24. Kevin J. Stiroh, 2002. "Information Technology and the U.S. Productivity Revival: What Do the Industry Data Say?," American Economic Review, American Economic Association, vol. 92(5), pages 1559-1576, December.
    25. Philippe Aghion & Nick Bloom & Richard Blundell & Rachel Griffith & Peter Howitt, 2005. "Competition and Innovation: an Inverted-U Relationship," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 120(2), pages 701-728.
    26. 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.
    27. Emek Basker, 2005. "Job Creation or Destruction? Labor Market Effects of Wal-Mart Expansion," The Review of Economics and Statistics, MIT Press, vol. 87(1), pages 174-183, February.
    28. David C. Wheelock & Paul W. Wilson, 2000. "Why do Banks Disappear? The Determinants of U.S. Bank Failures and Acquisitions," The Review of Economics and Statistics, MIT Press, vol. 82(1), pages 127-138, February.
    29. Erik Brynjolfsson & Lorin M. Hitt, 2003. "Computing Productivity: Firm-Level Evidence," The Review of Economics and Statistics, MIT Press, vol. 85(4), pages 793-808, November.
    30. Stephen D. Oliner & Daniel E. Sichel, 2000. "The Resurgence of Growth in the Late 1990s: Is Information Technology the Story?," Journal of Economic Perspectives, American Economic Association, vol. 14(4), pages 3-22, Fall.
    31. Battese, G E & Coelli, T J, 1995. "A Model for Technical Inefficiency Effects in a Stochastic Frontier Production Function for Panel Data," Empirical Economics, Springer, vol. 20(2), pages 325-332.
    32. Sanjeev Dewan & Chung-ki Min, 1997. "The Substitution of Information Technology for Other Factors of Production: A Firm Level Analysis," Management Science, INFORMS, vol. 43(12), pages 1660-1675, December.
    33. Arellano, Manuel & Bover, Olympia, 1995. "Another look at the instrumental variable estimation of error-components models," Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
    34. David Good & M. Nadiri & Lars-Hendrik Röller & Robin Sickles, 1993. "Efficiency and productivity growth comparisons of European and U.S. Air carriers: A first look at the data," Journal of Productivity Analysis, Springer, vol. 4(1), pages 115-125, June.
    35. Rajiv D. Banker & Hsihui Chang & Ram Natarajan, 2005. "Productivity Change, Technical Progress, and Relative Efficiency Change in the Public Accounting Industry," Management Science, INFORMS, vol. 51(2), pages 291-304, February.
    36. Kumbhakar, Subal C., 1991. "Estimation of technical inefficiency in panel data models with firm- and time-specific effects," Economics Letters, Elsevier, vol. 36(1), pages 43-48, May.
    37. Susanto Basu & John G. Fernald & Nicholas Oulton & Sylaja Srinivasan, 2003. "The Case of the Missing Productivity Growth: Or, Does Information Technology Explain why Productivity Accelerated in the US but not the UK?," NBER Working Papers 10010, National Bureau of Economic Research, Inc.
    38. A. Daly & D.M.W.N. Hitchens & K. Wagner, 1985. "Productivity, Machinery and Skills in a Sample of British and German Manufacturing Plants," National Institute Economic Review, National Institute of Economic and Social Research, vol. 111(1), pages 48-61, February.
    39. Stephen Bond & Julie Ann Elston & Jacques Mairesse & Benoît Mulkay, 2003. "Financial Factors and Investment in Belgium, France, Germany, and the United Kingdom: A Comparison Using Company Panel Data," The Review of Economics and Statistics, MIT Press, vol. 85(1), pages 153-165, February.
    40. Byungtae Lee & Anitesh Barua, 1999. "An Integrated Assessment of Productivity and Efficiency Impacts of Information Technology Investments: Old Data, New Analysis and Evidence," Journal of Productivity Analysis, Springer, vol. 12(1), pages 21-43, August.
    41. Sherman T. Folland & Richard A. Hofler, 2001. "How reliable are hospital efficiency estimates? Exploiting the dual to homothetic production," Health Economics, John Wiley & Sons, Ltd., vol. 10(8), pages 683-698, December.
    42. Blundell, Richard & Bond, Stephen, 1998. "Initial conditions and moment restrictions in dynamic panel data models," Journal of Econometrics, Elsevier, vol. 87(1), pages 115-143, August.
    43. Williams, Jonathan, 2004. "Determining management behaviour in European banking," Journal of Banking & Finance, Elsevier, vol. 28(10), pages 2427-2460, October.
    44. Green, Alison & Mayes, David, 1991. "Technical Inefficiency in Manufacturing Industries," Economic Journal, Royal Economic Society, vol. 101(406), pages 523-538, May.
    45. Koke, Jens & Renneboog, Luc, 2005. "Do Corporate Control and Product Market Competition Lead to Stronger Productivity Growth? Evidence from Market-Oriented and Blockholder-Based Governance Regimes," Journal of Law and Economics, University of Chicago Press, vol. 48(2), pages 475-516, October.
    46. Hall, Robert E, 1988. "The Relation between Price and Marginal Cost in U.S. Industry," Journal of Political Economy, University of Chicago Press, vol. 96(5), pages 921-947, October.
    47. Oulton, Nicholas, 1998. "Competition and the Dispersion of Labour Productivity amongst UK Companies," Oxford Economic Papers, Oxford University Press, vol. 50(1), pages 23-38, January.
    48. Sidney G. Winter, 1971. "Satisficing, Selection, and the Innovating Remnant," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 85(2), pages 237-261.
    49. Kumbhakar, Subal C & Hjalmarsson, Lennart, 1995. "Labour-Use Efficiency in Swedish Social Insurance Offices," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 10(1), pages 33-47, Jan.-Marc.
    50. Primeaux, Walter J, Jr, 1977. "An Assessment of X-Efficiency Gained through Competition," The Review of Economics and Statistics, MIT Press, vol. 59(1), pages 105-108, February.
    51. Robert Jacobson, 1990. "Unobservable Effects and Business Performance," Marketing Science, INFORMS, vol. 9(1), pages 74-85.
    52. Nickell, Stephen J, 1996. "Competition and Corporate Performance," Journal of Political Economy, University of Chicago Press, vol. 104(4), pages 724-746, August.
    53. Battese, George E. & Coelli, Tim J., 1988. "Prediction of firm-level technical efficiencies with a generalized frontier production function and panel data," Journal of Econometrics, Elsevier, vol. 38(3), pages 387-399, July.
    54. Erik Brynjolfsson & Lorin M. Hitt, 2000. "Beyond Computation: Information Technology, Organizational Transformation and Business Performance," Journal of Economic Perspectives, American Economic Association, vol. 14(4), pages 23-48, Fall.
    55. Pitt, Mark M. & Lee, Lung-Fei, 1981. "The measurement and sources of technical inefficiency in the Indonesian weaving industry," Journal of Development Economics, Elsevier, vol. 9(1), pages 43-64, August.
    56. K.P. Kalirajan & R.T. Shand, 1992. "Causality between Technical and Allocative Efficiencies: An Empirical Testing," Journal of Economic Studies, Emerald Group Publishing, vol. 19(2), pages 3-17, May.
    57. Kevin Amess, 2003. "The Effect of Management Buyouts on Firm–level Technical Inefficiency: Evidence from a Panel of UK Machinery and Equipment Manufacturers," Journal of Industrial Economics, Wiley Blackwell, vol. 51(1), pages 35-44, March.
    58. Robert J. Gordon, 1990. "The Measurement of Durable Goods Prices," NBER Books, National Bureau of Economic Research, Inc, number gord90-1.
    59. Nishimizu, Mieko & Page, John M, Jr, 1982. "Total Factor Productivity Growth, Technological Progress and Technical Efficiency Change: Dimensions of Productivity Change in Yugoslavia, 1965-78," Economic Journal, Royal Economic Society, vol. 92(368), pages 920-936, December.
    60. Wang, Hung-Jen, 2003. "A Stochastic Frontier Analysis of Financing Constraints on Investment: The Case of Financial Liberalization in Taiwan," Journal of Business & Economic Statistics, American Statistical Association, vol. 21(3), pages 406-419, July.
    61. Alwyn Young, 1995. "The Tyranny of Numbers: Confronting the Statistical Realities of the East Asian Growth Experience," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 110(3), pages 641-680.
    62. Gort, Michael & Sung, Nakil, 1999. "Competition and Productivity Growth: The Case of the U.S. Telephone Industry," Economic Inquiry, Western Economic Association International, vol. 37(4), pages 678-691, October.
    63. Richard Kneller & Philip Andrew Stevens, 2006. "Frontier Technology and Absorptive Capacity: Evidence from OECD Manufacturing Industries," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 68(1), pages 1-21, February.
    64. Young Bong Chang & Vijay Gurbaxani, 2012. "The Impact of IT-Related Spillovers on Long-Run Productivity: An Empirical Analysis," Information Systems Research, INFORMS, vol. 23(3-part-2), pages 868-886, September.
    65. Assaf Razin & Efraim Sadka (ed.), 1987. "Economic Policy in Theory and Practice," Palgrave Macmillan Books, Palgrave Macmillan, number 978-1-349-18584-9, December.
    66. Cornwell, Christopher & Schmidt, Peter & Sickles, Robin C., 1990. "Production frontiers with cross-sectional and time-series variation in efficiency levels," Journal of Econometrics, Elsevier, vol. 46(1-2), pages 185-200.
    67. Manuel Arellano & Stephen Bond, 1991. "Some Tests of Specification for Panel Data: Monte Carlo Evidence and an Application to Employment Equations," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 58(2), pages 277-297.
    68. 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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