健康传播中的说服研究，始终以洞察人的心理动因为途径，研究如何通过传播媒介和信息生产来更有效地改变人们对待健康信息的态度和行为，从而促进公共健康。恐惧诉求是使用威胁的方式使受众心生恐惧来达成说服的目的，而扩展的平行过程模型（EPPM）是在恐惧诉求方面被检验得最彻底、最全面，并且得到最广泛接受的模型之一。它不仅通过两种信息认知反应过程解释了以往研究理论中未回答的“为什么恐惧诉求有时成功，有时却失败？”这一问题，还可以指导健康传播从业人员设计、实施和评估传播运动。

本研究基于文献资料，通过对扩展的平行过程模型（EPPM）中要素、结构、测量等方面的梳理，提出EPPM作为一个认知处理模型缺乏对个体内部心理机制的直接测量，因此将认知神经科学的方法引入EPPM形成交叉学科的新研究范式，超越以往自我报告式的主观评定，从微观层面对人的认知过程和认知效果进行客观指标描述与科学解释分析，来解决EPPM因为研究范式局限悬而未决的问题，增强其理论解释力和预测力。本研究还设计、实施了一项探索性实验，以癌症作为唤起恐惧情绪的健康信息，控制其威胁感和效能感水平，使用事件相关电位（ERPs）的研究范式对信息内容特征影响个体认知处理效果差异进行初探。最后，研究探讨了在健康传播视域下将新的交叉学科范式应用于EPPM研究的优势与可行性。

Persuasion research in health communication has always been based on insights into people's psychological motivations to study how to use media and information production to more effectively change people's attitudes and behaviors toward health information, thereby promoting public health. Fear appeal is to use threats to make the audience feel fear to achieve the purpose of persuasion, and the Extended Parallel Process Model (EPPM) is one of the most thoroughly and comprehensively tested and widely accepted models in the field of fear appeal. Not only does it explain the unanswered question of "why fear appeal sometimes succeeds and sometimes fails?" through the two information cognitive response processes, but also can guide health communication practitioners to design, implement and evaluate communication campaigns. 

Based on the literature, this study combs the elements, structure, measurement and other aspects of EPPM. It is proposed that EPPM as a cognitive processing model lacks direct measurement of individual internal psychological mechanisms. The method introduced EPPM to form a new research paradigm of interdisciplinary. This method surpasses the previous self-reported subjective assessment, uses objective indicators to describe human cognitive processes and cognitive effects at the micro level and conducts scientific explanation and analysis to solve the problems that EPPM has not yet solved because of the limitations of the research paradigm. It can also enhance EPPM’s theoretical explanatory power and predictive power. The auther also designed and implemented an exploratory experiment, using cancer as health topic that evokes fear, controlling its level of threat and efficacy, and using the paradigm of event-related potentials (ERPs) to study the influence of content characteristics on individual cognition. Finally, the study explores the advantages and feasibility of applying the new interdisciplinary paradigm to EPPM research in the perspective of health communication.