Policy Evaluation with Combined Actual and Contingent Response Data
利用美国马里埃塔市垃圾收费改革前后的实际与假设行为数据，检验经验对假设问题回答的影响，并评估假设数据的偏差，为政策分析提供方法参考。
Abstract The City of Marietta, Georgia, experimentally switched from flat fee financing to volume‐based pricing for its trash services in January 1994. Both before and during the experiment, detailed data on individuals' observed responses to the actual introduction and contingent behavioral responses to a hypothetical introduction of volume‐based pricing were collected. This study applies these data, and investigates the methodology of collecting contingent behavior data and their use in policy analysis. In particular, this study empirically evaluates the effect of experience with the policy on responses to contingent behavior questions, and tests for potential bias in the contingent behavior data.