Consistently inconsistent: The role of certainty,acceptability and scale in choice |
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| Institution: | 1. School of Physics, University of Hyderabad, Hyderabad 500046, India;2. School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046, India;1. International Maize and Wheat Improvement Centre (CIMMYT), PO Box 2041-00621, Nairobi, Kenya;2. University of Pretoria, Department of Agricultural Economics, Extension and Rural Development, Private Bag X20, Hatfield, Pretoria 0026, South Africa;3. Natural Resources Institute, University of Greenwich, Greenwich, Medway Campus, Central Avenue, Chatham Maritime ME4 4TB, United Kingdom;4. Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA;1. Department of Food and Resource Economics, University of Copenhagen, Denmark;2. Centre for Macroecology, Evolution and Climate, University of Copenhagen, Denmark |
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| Abstract: | Recently emerging in the stated preference literature as methods for better representing behaviour are choice certainty calibration and alternative acceptability. This paper finds that the amount of idiosyncratic error in the context of automobile choice is significant and can be explained by choice task certainty; which is a function of several respondent characteristics. However, it also finds that no theoretical framework exists for how these techniques should be applied and that econometric differences may be responsible for improvements in model fit, rather than better behavioural representation. Raising several questions about certainty indexing, researchers are advised to apply such methods cautiously. |
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| Keywords: | Scale Heterogeneity Choice certainty Preferences Alternative acceptability Respondent behaviour |
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