Asymmetries in Ordered Strength of Preference Models: Implications of Focus Shift for Discrete-Choice Preference Estimation
研究了在有序偏好强度模型中，受访者对“接受”和“拒绝”情景的权重差异（焦点转移）导致的不对称性，并基于流域管理调查数据验证了该现象，讨论了其对政策、调查设计和偏好估计的启示。
This paper explores potential focus shift asymmetries in an ordered strength of preference model applied to contingent choice data. A focus shift occurs when respondents weight factors differently when assessing preference for an "accepted" scenario than they do when assessing preference for a "rejected" scenario, and may imply that respondents do not refer to a single underlying preference function. Using data drawn from a survey which addressed preferences for watershed management, the model results identified focus shift asymmetries in the ordered strength of preference model. The paper discusses implications for policy, survey design, and discrete-choice preference estimation.