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IntroductionThe techniques of Chapters 3 and 4 depend on data from actual markets for the relevant environmental effect or for a surrogate effect. In the absence of these data, market exchanges can be simulated using survey questionnaires. Other methods ask questions to elicit monetary values directly (the contingent valuation and trade-off techniques) or to elicit values indirectly (contingent ranking and rating, and the priority evaluator). The success of these techniques is contingent on successful simulation of the market. This chapter describes each technique in terms of the problems it can help resolve, the values it can help estimate, its concept, its practical applications and an overview of strengths and weaknesses. Table 5.1 summarises the range of the techniques. Table 5.1: The range of simulated market approaches
Nature of questions Nature of simulation Technique Direct questions about Purchase of environmental Contingent valuation willingness to pay/accept good, service or asset Choice between Trade-off game alternatives each with a different level of the environmental effect Direct questions about Rank or rate environmental Contingent ranking and preferences and other goods and services contingent rating
Direct questions about Choice of quantities to Priority evaluator quantities to purchase purchase in market setting |
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©İsmail Güneş |