Tuan, Tran Hu; Lindhjem, Henrik - Volkswirtschaftliche Fakultät, … - 2008
generally) and valuation methods, we show that the degree of regularity and conformity with theory and empirical expectations is … higher for the more homogenous dataset of contingent valuation of endangered species. For example, we find that willingness … increases with income. Increasing the degree of heterogeneity in the valuation data, however, preserves much of the regularity …