Is stated preference certainty individual-specific? - An empirical study
The somewhat ad-hoc method of certainty calibration, based on self-stated preference certainty follow-up questions, has been found to be a successful method of eliminating or reducing hypothetical bias in stated preference studies. But is the preference certainty really context dependent, or do some subjects tend to always state themselves as certain regardless of the context, i.e. is the preference certainty dependent on a systematic unobservable individual-specific effect? This question is empirically analyzed in this paper using data where a preference certainty question follows a hypothetical willingness to pay question, in two different contexts. Estimated bivariate probit models provide no evidence for systematic individual-specific answers to the preference certainty follow-up questions of different contexts. Since there is no support for a randomly self-stated preference certainty either, this result is deemed to increase the credibility of certainty calibration.
|Date of creation:||17 Nov 2010|
|Date of revision:|
|Contact details of provider:|| Postal: VTI, Transport Economics, P.O. Box 6056, SE-171 06 Solna, Sweden|
Phone: +46-13-20 40 00
Fax: +46-13-14 14 36
Web page: http://www.vti.se/tek
More information through EDIRC
When requesting a correction, please mention this item's handle: RePEc:hhs:vtiwps:2010_012. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Mats Berggren)
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.