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Does the solemn oath lower WTP responses in a discrete choice experiment application to solar energy?

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  • Jamal Mamkhezri
  • Jennifer A. Thacher
  • Janie M. Chermak
  • Robert P. Berrens

Abstract

A recently offered alternative to eliminating or mitigating hypothetical bias associated with stated preference surveys is the solemn oath script. While the efficacy of solemn oath script is still debatable, the objective of this analysis is to provide an initial field setting test of the solemn oath script to a particular discrete choice experiment survey application to solar energy. We conducted a discrete choice experiment survey with two treatment groups: with and without having respondents sign the solemn oath prior to taking the survey. Utilizing random parameter logit models in both preference-space and willingness to pay (WTP)-space, results provide no evidence that the solemn oath script lowers respondents’ WTP for the good in question. Either there is no hypothetical bias in this solar energy case study, which we are unable to test as there is no real expenditure at issue, or the solemn oath script may have limited application outside of the experimental lab and is not effective under every condition. Lastly, this calls for more research on the efficacy of a solemn oath script.

Suggested Citation

  • Jamal Mamkhezri & Jennifer A. Thacher & Janie M. Chermak & Robert P. Berrens, 2020. "Does the solemn oath lower WTP responses in a discrete choice experiment application to solar energy?," Journal of Environmental Economics and Policy, Taylor & Francis Journals, vol. 9(4), pages 447-473, October.
    • Handle: RePEc:taf:teepxx:v:9:y:2020:i:4:p:447-473
    DOI: 10.1080/21606544.2020.1738276
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    Citations

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    Cited by:

    1. Milad Haghani & Michiel C. J. Bliemer & John M. Rose & Harmen Oppewal & Emily Lancsar, 2021. "Hypothetical bias in stated choice experiments: Part I. Integrative synthesis of empirical evidence and conceptualisation of external validity," Papers 2102.02940, arXiv.org.
    2. Haghani, Milad & Bliemer, Michiel C.J. & Rose, John M. & Oppewal, Harmen & Lancsar, Emily, 2021. "Hypothetical bias in stated choice experiments: Part II. Conceptualisation of external validity, sources and explanations of bias and effectiveness of mitigation methods," Journal of choice modelling, Elsevier, vol. 41(C).
    3. Haghani, Milad & Bliemer, Michiel C.J. & Rose, John M. & Oppewal, Harmen & Lancsar, Emily, 2021. "Hypothetical bias in stated choice experiments: Part I. Macro-scale analysis of literature and integrative synthesis of empirical evidence from applied economics, experimental psychology and neuroimag," Journal of choice modelling, Elsevier, vol. 41(C).
    4. Jamal Mamkhezri & Leonard A. Malczynski & Janie M. Chermak, 2021. "Assessing the Economic and Environmental Impacts of Alternative Renewable Portfolio Standards: Winners and Losers," Energies, MDPI, vol. 14(11), pages 1-23, June.
    5. Andersson, Henrik & Ouvrard, Benjamin, 2023. "Priming and the value of a statistical life: A cross country comparison," Journal of Behavioral and Experimental Economics (formerly The Journal of Socio-Economics), Elsevier, vol. 104(C).
    6. Milad Haghani & Michiel C. J. Bliemer & John M. Rose & Harmen Oppewal & Emily Lancsar, 2021. "Hypothetical bias in stated choice experiments: Part II. Macro-scale analysis of literature and effectiveness of bias mitigation methods," Papers 2102.02945, arXiv.org.
    7. Mohsen Khezri & Mohammad Sharif Karimi & Jamal Mamkhezri & Reza Ghazal & Larry Blank, 2022. "Assessing the Impact of Selected Determinants on Renewable Energy Sources in the Electricity Mix: The Case of ASEAN Countries," Energies, MDPI, vol. 15(13), pages 1-15, June.
    8. Dastan Bamwesigye, 2023. "Willingness to Pay for Alternative Energies in Uganda: Energy Needs and Policy Instruments towards Zero Deforestation 2030 and Climate Change," Energies, MDPI, vol. 16(2), pages 1-21, January.
    9. Jeuland, Marc & Babyenda, Peter & Beyene, Abebe & Hinju, Gabriel & Mulwa, Richard & Phillips, Jonathan & Zewdie, Samuel A., 2023. "Barriers to off-grid energy development: Evidence from a comparative survey of private sector energy service providers in Eastern Africa," Renewable Energy, Elsevier, vol. 216(C).
    10. Andersson, Henrik & Ouvrard, Benjamin, 2023. "Priming and the Value of a Statistical Life: A Cross Country Comparison," TSE Working Papers 23-1439, Toulouse School of Economics (TSE).
    11. Hui Dai & Jamal Mamkhezri & Noman Arshed & Anam Javaid & Sultan Salem & Yousaf Ali Khan, 2022. "Role of Energy Mix in Determining Climate Change Vulnerability in G7 Countries," Sustainability, MDPI, vol. 14(4), pages 1-15, February.

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