Abstract
Estimates of non-market values are valuable for policy makers. However, evidence of the stability of value estimates over long timeframes is limited. That can reduce the usefulness of such values in benefit transfer over time. Furthermore, the values might be affected by the choice of presentation of alternatives (e.g., labeled versus unlabeled). Most of the literature comparing the willingness-to-pay (WTP) estimates lacks an investigation of temporal stability for labeled and unlabeled alternatives. In this case study, the temporal stability of WTP estimates for emissions reduction has been assessed for labeled and unlabeled alternatives. Emissions reduction, certainty of emissions reduction and the options for emissions reductions such as green power, efficient technologies and carbon capture were used to identify respondents’ WTP. The results show that WTP has changed significantly over the course of 10 years. The case study identified that WTP was larger for labeled alternatives than for unlabeled alternatives. The results indicate that WTP estimated from unlabeled alternatives may be more sensitive to temporal effects than labeled alternatives.
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Notes
The first period of the Kyoto Protocol ran from 2008 to 2012. Australia met and exceeded its first period target of 108% of 1990 emissions levels by 2012. For the second period, 2013–2020, Australia has a target of 99.5% of 1990 emissions levels by 2020 (equivalent to 5% below 2000 emission levels by 2020) (Loynes 2021).
The difference in coefficients with the Williams and Rolfe (2017) paper is due to the modelling approaches: constrained (2017) and unconstrained (this paper) distributions of random parameters.
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Funding was provided by the Centre for Tourism and Regional Opportunities (CTRO), CQUniveristy, Australia.
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Williams, G. Temporal stability of WTP estimates in labeled and unlabeled choice experiment for emissions reduction options, Queensland, Australia. Environ Econ Policy Stud 24, 533–550 (2022). https://doi.org/10.1007/s10018-021-00336-4
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DOI: https://doi.org/10.1007/s10018-021-00336-4