In this paper we used a net present value model to jointly estimate the willingness to pay (WTP), and the intertemporal discount rate, for a biodiversity environmental conservation program whose payments are allocated along a time horizon. We applied a contingent valuation survey to capture the economic value associated with the protection of a marine ecosystem in the marine reserve, Choros-Damas in Chile. Respondents faced a scenario with a WTP question with periods of 1, 5, and 10 years.

Hypothetical bias is one of the main issues bedeviling the field of nonmarket valuation. The general criticism is that survey responses reflect how people would like to behave, rather than how they actually behave. In our study of climate change and carbon emissions reductions, based on the increasing bulk of evidence from psychology and economics regarding the effects of making promises, we investigate the effect of an oath script in a contingent valuation survey.

Cities in developing countries experiencing rapid urbanization and population growth too often lack the financial resources and institutional capacity to provide needed municipal infrastructure for adequate solid waste management, despite citizens’ demand for it.

This study identifies the determinants of households’ willingness to pay for an improvement in solid waste-collection services based on 381 households in Kampala.

With contingent valuation, both the goods being valued and the payment vehicles used to value them are mostly hypothetical. However, although numerous studies have examined the impact of experience with the good on willingness to pay, less attention has been given to experience with payment vehicles.

In this paper, choice experiment was applied for valuation of Lake Tana’s fishery and watershed.

Hypothetical bias is one of the main issues bedeviling the field of nonmarket valuation. The general criticism is that survey responses reflect how people would like to behave, rather than how they actually behave. In our study of climate change and emissions reductions, we took advantage of the increasing bulk of evidence from psychology and economics that addresses the effects of making promises, in order to investigate the effect of an oath script in a contingent valuation survey.