Aggregation of common-metric attributes in preference revelation in choice experiments and implications for willingness to pay
Aggregation of common-metric attributes in preference revelation in choice experiments and implications for willingness to pay
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选择实验中偏好揭示的共同度量属性的聚合及其对支付意愿的影响
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
D. Hensher
中科院分区：
文献类型：
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作者：
D. Layton;D. Hensher
有越来越多的文献，促进过程异质性的概念，个人评估包的属性在真实的或假设的市场，并作出选择。经验证据表明，个人使用一些处理策略，如取消，引用和属性聚合，后者发生在有一个共同的度量。在本文中，我们考虑在公共度量上定义的属性之间的阈值关系（例如，分钟或美元），以便获得关于在偏好揭示中这些属性可能被加起来或不被加起来的程度的证据。该模型规范不需要补充信息，是否特定的个人声称已经添加了属性，而是我们构造一个非线性效用函数，允许概率保存或聚合的每个属性。我们将这一新的证据转化为支付意愿（WTP）的旅行时间节省，并将其与传统的线性加法模型的结果进行对比，以及建立自我陈述的属性添加系统的WTP和组件输入到WTP的变化程度。强调了环境评估的影响。（一）
There is a growing literature that promotes the notion of process heterogeneity in the way that individuals evaluate packages of attributes in real or hypothetical markets and make choices. Empirical evidence suggests that individuals use a number of processing strategies such as cancellation, referencing, and attribute aggregation, the latter occurring where there is a common metric. In this paper we consider the threshold relationship between attributes that are defined on a common metric (e.g., minutes or dollars), in order to gain evidence on the extent to which such attributes might be added up or not in preference revelation. The model specification does not require supplementary information on whether specific individuals claimed to have added up attributes; rather we structure a nonlinear utility function that permits a probabilistic preservation or aggregation of each attribute. We translate this new evidence into a willingness to pay (WTP) for travel time savings, and contrast it with the results from the traditional linear additive model, as well as establishing the extent to which self-stated attribute addition systematically varies with WTP and component inputs into WTP. The implications for environmental assessment are highlighted. (a)