(7) Model estimation and welfare estimates. Flexible specifications of count models are suggested withinthe demand function approach. Random utility travel cost models have recently focussed on preferenceheterogeneity by using either finite or continuous-mixture distributions. Recently introducedin outdoor recreation, the specification of utility in the WTP space is suggested, allowsfor the estimation of the distributions of the WTPs directly, rather than deriving indirectly,as in the traditional setting of the utility in the preference space (Scarpa et al., 2008; Thiene andScarpa,2009).because them it
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