“…The contingent valuation method (CVM) has been the most commonly used non-market valuation method for estimating the benefits of environmental goods and services as it can create hypothetical markets that can be used to elicit people's willingness to pay (WTP) for changes in non-market goods, and in so doing, can be used to establish the benefits (Mitchell and Carson, 1989;Bishop and Romano, 1998;Carson et al, 2001). CVM is widely used all over the world in areas of economics such as in health economics (O'Shea et al, 2008;Borghi and Jan, 2008), cultural economics (Kim et al, 2007) and transportation safety and economics (Nor and Yusuff, 2003) as well as in environmental economics.…”