So sánh phương pháp

	Contingent Valuation Method	Choice Experiment Valuation
Lĩnh vực	Kinh tế học	Kinh tế học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1963	1974
Người khởi xướng	Robert K. Davis (early use); methodology codified by the NOAA panel	Random utility theory (McFadden); applied to valuation by Louviere & Hensher
Loại	Survey-based stated-preference valuation method	Attribute-based stated-preference valuation method
Công trình gốc	Hanemann, W. M. (1994). Valuing the environment through contingent valuation. Journal of Economic Perspectives, 8(4), 19–43.	McFadden, D. (1974). Conditional logit analysis of qualitative choice behavior. In P. Zarembka (Ed.), Frontiers in Econometrics (pp. 105–142). New York: Academic Press. ISBN: 9780127761503
Tên gọi khác	CVM, Stated-Preference Valuation, Willingness-to-Pay Survey, Survey-Based Non-Market Valuation	Discrete Choice Experiment, DCE, Choice-Based Conjoint Valuation, Stated Choice Experiment
Liên quan	2	2
Tóm tắt	The contingent valuation method (CVM) is a survey-based stated-preference technique for estimating the economic value people place on goods that are not traded in markets — clean air, an endangered species, a wilderness area, the existence of a natural resource. Respondents are presented with a carefully constructed hypothetical scenario and asked how much they would be willing to pay for a described change in provision; their answers are used to estimate mean or median willingness to pay, including non-use (existence) values that no market reveals.	A choice experiment (discrete choice experiment, DCE) is an attribute-based stated-preference method that values non-market goods by describing them as bundles of characteristics and asking respondents to choose repeatedly among competing alternatives — one of which always carries a cost. Grounded in random utility theory, the choices are modeled with a discrete-choice model whose coefficients reveal the relative value of each attribute, and dividing any attribute's coefficient by the cost coefficient yields its marginal willingness to pay.