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    Comparing cultural heritage values in South East Asia : possibilities and difficulties in cross-country transfers of economic values
    (Elsevier Masson SAS, Paris, FR, 2009) Tran Huu Tuan; Udomsak Seenprachawong; Stale Navrud
    Benefit transfer refers to the transfer of economic values from a primary valuation study (study site) to a site where we need to conduct policy analysis (policy site). Due to the considerable costs and time required to conduct primary valuation studies, using benefit transfers to estimate the values for sites not yet valued is likely to attract policy interest. While benefit transfer is being increasingly applied in studies on environmental goods, its application in the field of cultural heritage resources is rare. The unique nature of these public goods, and differences in the size and demographic characteristics of the affected populations lead to a significant risk of benefit transfer providing irrelevant estimates for cultural heritage. In this study, we compared the results of two contingent valuation (CV) studies involving historic temples in Thailand and Vietnam, tested the validity and reliability of benefit transfers between the two sites, and explored the possibilities and difficulties in such transfers. We found that the error in transferring unadjusted mean willingness-to-pay (WTP) ranged from 46% to 129%. Adjustments for differences in purchasing power parity (PPP), income level and income elasticity between the sites substantially increased rather than decreased transfer errors in many instances. Function transfers did not perform better than unadjusted unit transfers. These results suggest that there are other important factors - possibly physical, cultural and institutional variables - that need to be taken into account in explaining the differences in WTP for cultural heritage aside from the usual income and socio-economic variables captured in CV studies. Until we are able to identify these other factors and measure their impacts, the potential policy use of benefit transfer in the case of cultural heritage goods remains limited.
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    Capturing the benefits of preserving cultural heritage
    (Elsevier Masson SAS, Paris, FR, 2008) Tuan, Tran Huu; Navrud, Stale
    There 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.
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    Valuing cultural heritage in developing countries : comparing and pooling contingent valuation and choice modelling estimates
    (Springer, Dordrecht, NL, 2006) Tuan, Tran Huu; Navrud, Stale
    A 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.