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How to Improve the Accuracy of Project Schedules? The Effect of Project Specification and Historical Information on Duration Estimates

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  • Lorko, Matej
  • Servátka, Maroš
  • Zhang, Le

Abstract

The success of a business project often depends on the accuracy of project estimates. Inaccurate, often overoptimistic schedules can lead to significant project failures. In this paper, we experimentally investigate the effectiveness of two interventions designed to mitigate the pervasive underestimation bias and improve the accuracy of project duration estimates: (1) increasing the quantity of available information prior to estimation by providing historical information regarding the average duration of similar projects in the past and (2) increasing the quality of available information prior to estimation by providing a more detailed project specification. In addition, we also test whether it is more effective to provide historical information together with the project specification or only after the initial beliefs regarding the project duration are formed. We find that increasing both the quantity and quality of project relevant information successfully mitigates the underestimation bias. However, only the provision of historical information is also associated with significant improvement in absolute estimation accuracy. The timing at which such information is disclosed to planners does not seem to influence the effectiveness of the intervention. We also find that subjective confidence in the accuracy of duration estimates does not vary across experimental treatments, suggesting that the confidence in estimates is neither a function of the quantity nor the quality of available information prior to estimation.

Suggested Citation

  • Lorko, Matej & Servátka, Maroš & Zhang, Le, 2019. "How to Improve the Accuracy of Project Schedules? The Effect of Project Specification and Historical Information on Duration Estimates," MPRA Paper 95585, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:95585
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    References listed on IDEAS

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    1. Woods, Daniel & Servátka, Maroš, 2016. "Testing psychological forward induction and the updating of beliefs in the lost wallet game," Journal of Economic Psychology, Elsevier, vol. 56(C), pages 116-125.
    2. Ben Greiner, 2015. "Subject pool recruitment procedures: organizing experiments with ORSEE," Journal of the Economic Science Association, Springer;Economic Science Association, vol. 1(1), pages 114-125, July.
    3. Charles A. Holt & Susan K. Laury, 2002. "Risk Aversion and Incentive Effects," American Economic Review, American Economic Association, vol. 92(5), pages 1644-1655, December.
    4. Lorko, Matej & Servátka, Maroš & Zhang, Le, 2019. "Anchoring in project duration estimation," Journal of Economic Behavior & Organization, Elsevier, vol. 162(C), pages 49-65.
    5. Urs Fischbacher, 2007. "z-Tree: Zurich toolbox for ready-made economic experiments," Experimental Economics, Springer;Economic Science Association, vol. 10(2), pages 171-178, June.
    6. James Cox & Vjollca Sadiraj & Ulrich Schmidt, 2015. "Paradoxes and mechanisms for choice under risk," Experimental Economics, Springer;Economic Science Association, vol. 18(2), pages 215-250, June.
    7. Daniel Kahneman & Dan Lovallo, 1993. "Timid Choices and Bold Forecasts: A Cognitive Perspective on Risk Taking," Management Science, INFORMS, vol. 39(1), pages 17-31, January.
    8. Stanley L. Engerman & Kenneth L. Sokoloff, 2006. "Digging the Dirt at Public Expense: Digging the Dirt at Public Expense Erie Canal and Other Public Works," NBER Chapters, in: Corruption and Reform: Lessons from America's Economic History, pages 95-122, National Bureau of Economic Research, Inc.
    9. Gary Klein, 1999. "Sources of Power: How People Make Decisions," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262611465, December.
    10. Holt, Charles A, 1986. "Preference Reversals and the Independence Axiom," American Economic Review, American Economic Association, vol. 76(3), pages 508-515, June.
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    More about this item

    Keywords

    project management; project planning; time management; duration estimation; historical information; project specification;
    All these keywords.

    JEL classification:

    • C91 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Individual Behavior
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • O21 - Economic Development, Innovation, Technological Change, and Growth - - Development Planning and Policy - - - Planning Models; Planning Policy
    • O22 - Economic Development, Innovation, Technological Change, and Growth - - Development Planning and Policy - - - Project Analysis

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