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Is 'referencing' a remedy to hypothetical bias in value of time elicitation?: Evidence from economic experiments
Örebro University, Örebro University School of Business. (Nationalekonomi)ORCID iD: 0000-0003-1172-1076
Örebro University, Örebro University School of Business. (Nationalekonomi)
2017 (English)In: Transportation, ISSN 0049-4488, E-ISSN 1572-9435Article in journal (Refereed) Epub ahead of print
Abstract [en]

This paper demonstrates that commonly used methods for eliciting value of time can give downward bias and investigates whether this can be reversed by ‘referencing’ as has been suggested (e.g., by Hensher in Transp Res B 44:735–752,2010), i.e. with attributes of choice alternatives pivoted around a recently made journey. Value-of-time choice experiments were conducted in two rounds. In the first round, real and hypothetical purchases of performance of a simple time-consuming task were done to assess hypothetical bias; in the second round, participants were asked to do hypothetical travel choices with and without ‘referencing’ to a specific occasion, to be able to test ‘referencing’ as a remedy to the bias confirmed in the first round. A negative hypothetical bias was found for allocation of time at another occasion than the present (but not for a decision concern allocation of time ‘here and now’). A striking result was held from the second round experiments: ‘referencing’ indeed affects responses, but by reducing the elicited implicit value of time, so any negative hypothetical bias that would exist without ‘referencing’ would have been further magnified by the ‘referencing’ design.

Place, publisher, year, edition, pages
Springer, 2017.
Keyword [en]
Value of time, Stated choice, Certainty calibration, Referencing
National Category
Economics
Research subject
Economics
Identifiers
URN: urn:nbn:se:oru:diva-59113DOI: 10.1007/s11116-017-9803-1OAI: oai:DiVA.org:oru-59113DiVA, id: diva2:1134034
Available from: 2017-08-17 Created: 2017-08-17 Last updated: 2018-05-16Bibliographically approved
In thesis
1. Essays on Offshoring, Labor Demand and Hypothetical Bias in Choice Experiments
Open this publication in new window or tab >>Essays on Offshoring, Labor Demand and Hypothetical Bias in Choice Experiments
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This dissertation consists of four papers on offshoring, labor demand and hypothetical bias in travel-time stated choice experiments. They are summarized as follows. Essay 1: Firm-level Effects of Offshoring of Materials and Services on Relative Labor Demand analyzes the effect of relocation of production process abroad (offshoring), on relative labor demand for the Swedish manufacturing sector over the period 1997-2002. This essay gives no support to the expected negative effect of out-location of high-skilled activity in Swedish firms and even shows an increase in relative demand of high-skilled labor due to service offshoring. Essay 2: Labour Demand, Offshoring and Inshoring: Evidence from Swedish Firm-level Data adds to the existing literature of offshoring by simultaneously analyzing the effect of offshoring and inshoring measured as firm-level imports and exports, respectively, of intermediate goods (materials) or services on firm-level relative labor demand for high-skilled labor. The causality that we find between relative labor demand and service offshoring, cannot be established neither from goods nor services inshoring. Essay 3: Is ‘Referencing’ a Remedy to Hypothetical Bias in Value of Time Elicitation? Evidence from Economic Experiments demonstrates negative hypothetical bias, i.e. higher value of time is revealed by real choice when it is compared with the value estimated from a hypothetical choice survey. Referencing, that involves interviewing the respondents about the attributes of a reference trip that has been made and then constructing the stated choice experiment presenting variations of that trip, is tested as a suggested remedy. The results indicate that any negative hypothetical bias that would exist without referencing treatment would have been further magnified by the referencing design. Essay 4: Joint Usage of Referencing and Certainty in Travel Time Stated Choice Experiments explores the heterogeneous association of referencing with respect to self-reported choice-certainty with responses in stated choice experiments. The findings in the essay show that while uncertain respondents are more likely to accept the offer of a travel-time prolongation for monetary compensation with referencing, certain respondents tend to be less likely to accept the offer under referencing conditions.

Place, publisher, year, edition, pages
Örebro: Örebro University, 2018. p. 33
Series
Örebro Studies in Economics, ISSN 1651-8896 ; 40
Keyword
Offshoring, Inshoring, Firm-level Data, Relative Labor Demand, Stated Choice Experiments, Hypothetical Bias, Referencing, Certainty Calibration, Value of Time
National Category
Economics
Identifiers
urn:nbn:se:oru:diva-66590 (URN)978-91-7529-248-9 (ISBN)
Public defence
2018-06-08, Örebro universitet, Hörsalen, Musikhögskolan, Fakultetsgatan 1, Örebro, 10:00 (English)
Opponent
Supervisors
Available from: 2018-04-13 Created: 2018-04-13 Last updated: 2018-06-04Bibliographically approved

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Hultkrantz, LarsSavsin, Selen

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