Richardson, Leslie; Loomis, John - In: Ecological Economics 68 (2009) 5, pp. 1535-1548
This paper updates a 1996 meta-analysis of studies using the Contingent Valuation Method (CVM) to value threatened, endangered and rare species published in this journal by Loomis and White. A variable for studies conducted in or after 1995 was added to the model to test if new studies are...