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Should Reference Alternatives in Pivot Design SC Surveys be Treated Differently?

机译:数据透视设计SC调查中的参考替代方法是否应区别对待?

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摘要

Analysts are increasingly making use of pivot style Stated Choice (SC) data in the estimation of choice models. These datasets often contain a reference alternative whose attributes remain invariant across replications for the same respondent. This paper presents evidence to suggest that respondents react differently to the attributes of these reference alternatives and those of purely hypothetical alternatives. While some such evidence has been reported in the existing literature, this paper goes further and details a number of different departures from a common treatment of the two types of alternatives, relating both to the observed part of utility and the error term.
机译:分析师在选择模型的估计中越来越多地使用支点样式的状态选择(SC)数据。这些数据集通常包含一个参考替代项,其属性在同一响应者的复制过程中保持不变。本文提供的证据表明,受访者对这些参考替代品和纯假设替代品的属性有不同的反应。尽管现有文献中已经报道了一些此类证据,但本文更进一步并详细说明了对两种替代方案的共同处理的许多不同之处,涉及实用性的观察部分和误差项。

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