本章课前案例通过“低碳知识对低碳行为的影响研究”介绍了概念模型的构建过程、研究假设的提出、问卷题项的设计以及假设的验证等，加深同学们对问卷设计流程以及基本要求，帮助同学们掌握自行设计问卷的技能。

Pre Class Case

The pre class case in this chapter introduces the construction process of the conceptual model, the formulation of research hypotheses, the design of questionnaire items, and the verification of hypotheses through the "Research on the Impact of Low Carbon Knowledge on Low Carbon Behavior", deepening students' understanding of the questionnaire design process and basic requirements, and helping them master the skills of self designing questionnaires.