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Using Internet in Stated Preference Surveys: A Review and Comparison of Survey Modes
Get PDFInternet is quickly becoming the survey mode of choice for stated preference (SP) surveys in environmental economics. However, this choice is being made with relatively little consideration of its potential influence on survey results. This paper reviews the theory and emerging evidence of mode effects in the survey methodology and SP literatures, summarizes the findings, and points out implications for Internet SP practice and research. The SP studies that compare Internet with other modes do generally not find substantial difference. The majority of welfare estimates are equal; or somewhat lower for the Internet surveys. Further, there is no clear evidence of substantially lower quality or validity of Internet responses. However, the degree of experimental control is often low in comparative studies across survey modes, and they often confound measurement and sample composition effects. Internet offers a huge potential for experimentation and innovation in SP research, but when used to derive reliable welfare estimates for policy assessment, issues like representation and nonresponse bias for different Internet panels should receive more attention.Internet; survey mode; contingent valuation; stated preferences
Using Internet in Stated Preference Surveys: A Review and Comparison of Survey Modes
Get PDFInternet is quickly becoming the survey mode of choice for stated preference (SP) surveys in environmental economics. However, this choice is being made with relatively little consideration of its potential influence on survey results. This paper reviews the theory and emerging evidence of mode effects in the survey methodology and SP literatures, summarizes the findings, and points out implications for Internet SP practice and research. The SP studies that compare Internet with other modes do generally not find substantial difference. The majority of welfare estimates are equal; or somewhat lower for the Internet surveys. Further, there is no clear evidence of substantially lower quality or validity of Internet responses. However, the degree of experimental control is often low in comparative studies across survey modes, and they often confound measurement and sample composition effects. Internet offers
a huge potential for experimentation and innovation in SP research, but when used to derive reliable welfare estimates for policy assessment, issues like representation and nonresponse bias for different Internet panels should receive more attention
Valuing cultural heritage in developing countries : comparing and pooling contingent valuation and choice modelling estimates
Get PDFA substantial part of the United Nation’s World Heritage Sites (WHSs) can be found in developing countries, but many of them are in a bad state. Thus, there is a need to document the social benefits of these global goods in order to justify the costs of restoration and preservation programmes (RPPs). This study adds to the scarce literature on economic benefits of WHSs in developing countries, and reduces the need to perform very uncertain benefit transfers from European or US valuation studies. We apply Contingent Valuation (CV) and Choice Modelling (CM) to estimate the social benefits of RPPs for the My Son world cultural heritage site in Vietnam; both to foreign visitors and the local residents. We then compare the estimates from the CV and CM methods, and pool the results from the two methods. The results show that both CV and CM are suited to estimating the economic benefits of preserving cultural heritage of My Son. The two methods produce very similar results, which can be interpreted as a test of convergence validity. The pooling results give evidence to show that the CV and CM models have the same underlying preference structures. Thus, these valuation models can be successfully used in cost-benefit analyses to assess the benefits to cultural heritage of measures to reduce air pollution, soil erosion, climate change and other causes to deterioration of cultural heritage sites
Not my cup of coffee: Farmers’ preferences for coffee variety traits – Lessons for crop breeding in the age of climate change
Get PDFThe advent of biotechnology and conservation of genetic resources hold promise to improve traits to meet the challenges to coffee growing from climate change. Developing new varieties by integrating traits in high demand by farmers could greatly increase farmers’ adoption of new varieties. This study aims to inform breeding priority setting by examining farmers’ preferences for coffee traits. A Discrete Choice Experiment was applied to smallholder farmers in northern Ethiopia to map their willingness-to-pay for improvements in four coffee traits: i) yield, ii) weather tolerance, iii) disease resistance, and iv) the maturity period. The traits are important to the farmers in their choice of coffee varieties. They prefer weather tolerant and disease resistant varieties; implying that they prefer yield stability over high yielding and early maturing varieties. Education level, access to irrigation and farmers’ experience in coffee farming explain the preference heterogeneity across farmers. These results suggest that breeding programs should give priority to yield stability in order to increase farmers’ adoption of new varieties, and secure in situ preservation of these traits. Thus, ex situ conservation programs are needed for early maturing and high yielding varieties, which farmers do not give priority to maintain in their own fields. This would improve climate resilience of coffee farming, and at the same time conserve the Arabica coffee genetic heritage of Ethiopia
Applying the dissonance-minimising format to value cultural heritage in developing countries
Get PDFWe adapt the dissonance-minimising (DM) format proposed by Blamey et al. [Land
Economics, 75 (1999) 126] in a dichotomous choice contingent valuation survey to estimate
the economic benefits of preserving a cultural heritage site in Vietnam. We find
that the DM format can be successfully applied to avoid biases because of yea-saying
in a developing country context
Capturing the benefits of preserving cultural heritage
Get PDFThere is an increasing body of contingent valuation (CV) studies applied to cultural heritage sites. These CV studies assess the social benefits of cultural resources, but few provide advice on the policy use of the results and the ways these benefits could be captured and used to improve the condition of the sites. This study attempts to do exactly this by conducting a CV survey of a preservation program for a World Heritage site, and using the estimated benefits for visitors to assess optimal entrance fees that maximize revenues for the site. We also perform a cost-benefit analysis of the preservation project, and show how the outcome can be used to justify investments in cultural heritage preservation
Environmental valuation in developing countries: The recreational value of wildlife viewing
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