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Mitigating Hypothetical Bias in Value of Time Studies: Lab-Experiment Results

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  • Hultkrantz, Lars

    () (Department of Business, Economics, Statistics and Informatics)

  • Shengcong, Xue

    (Department of Business, Economics, Statistics and Informatics)

Abstract

We present results from a series of willingness to-accept value-of-time choice experiments with students in Sweden and China, using both real and hypothetical purchases of the students´ time. Our results confirm negative hypothetical bias in stated choice elicitation of value-of-time. However, we find no evidence of hypothetical bias in a choice experiment where respondents to hypothetical or real offers have equal reference points (i.e., for purchase of their time “here and now”). Moreover, at least in the Chinese sample, we find that ex-post mitigation of negative hypothetical bias by certainty calibration, through recoding of uncertain “yes” responses into “no”, overshoots, while calibration by restricting estimations to confident “yes” and “no” responses possibly performs better.

Suggested Citation

  • Hultkrantz, Lars & Shengcong, Xue, 2009. "Mitigating Hypothetical Bias in Value of Time Studies: Lab-Experiment Results," Working Papers 2009:14, Örebro University, School of Business, revised 01 Nov 2010.
  • Handle: RePEc:hhs:oruesi:2009_014
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    References listed on IDEAS

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    Cited by:

    1. Jan-Erik Swärdh & Staffan Algers, 2016. "Willingness to accept commuting time within the household: stated preference evidence," Transportation, Springer, vol. 43(2), pages 219-241, March.

    More about this item

    Keywords

    Stated choice; Certainty calibration; Preference certainty;

    JEL classification:

    • C20 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - General
    • C91 - Mathematical and Quantitative Methods - - Design of Experiments - - - Laboratory, Individual Behavior
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General

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