This paper follows authors’ previous work, which measured social influence in travel behavior using a sequential stated adaptation experiment, and aims to investigate issues that are not discussed in the previous one. Specifically, this paper supplements the previous work in two aspects. On the one hand, the previous work tried to model respondents’ sequential choice in terms of a choice task with and without social network member’s choice, and estimated the model sequentially without any clear evidences to show the difference between sequential and simultaneous estimation. On the other hand, the previous work did not clearly address two specific issues that come with the use of sequential choice experiments (i.e., choice consistency and similarity). The results of this study reveal that estimating the model simultaneously may lead to confounding bias and that taking the issues caused by the sequential choice experiment could provide more insights about social influence.

本文遵循作者之前的工作，该工作使用顺序陈述的适应实验测量了旅行行为中的社会影响，旨在调查前一篇文章中未讨论的问题。具体来说，本文从两个方面对前人的工作进行了补充。一方面，之前的工作试图在有和没有社交网络成员选择的选择任务方面对受访者的顺序选择进行建模，并且在没有任何明确证据的情况下对模型进行顺序估计，以显示顺序估计和同时估计之间的差异。另一方面，之前的工作并没有明确解决使用顺序选择实验所带来的两个具体问题（即选择一致性和相似性）。