Nan Xiaoli, Daily Kelly
a Department of Communication , University of Maryland , College Park , Maryland , USA.
J Health Commun. 2015 Apr;20(4):462-71. doi: 10.1080/10810730.2014.989343. Epub 2015 Mar 9.
This study examines the effect of mixed online information, in the form of user-generated blogs, related to the HPV vaccine on perceived efficacy and safety of this vaccine. Guided by the theoretical frameworks of biased assimilation and need for closure, this research hypothesizes that exposure to mixed blogs about the HPV vaccine will lead to polarization of HPV vaccine-related beliefs among individuals with opposing prior opinions about vaccination and that the polarizing effects will be most pronounced among those high in need for closure. A controlled experiment (N = 338) found support for the hypotheses with regard to efficacy beliefs but not with regard to safety beliefs. Implications for health communication research and practice are discussed.
本研究考察了以用户生成博客形式呈现的关于人乳头瘤病毒（HPV）疫苗的混合在线信息对该疫苗感知效力和安全性的影响。在有偏同化和认知闭合需求的理论框架指导下，本研究假设，接触关于HPV疫苗的混合博客会导致在疫苗接种问题上持相反先验观点的个体之间，与HPV疫苗相关的信念两极分化，并且这种两极分化效应在认知闭合需求高的人群中最为明显。一项对照实验（N = 338）为关于效力信念的假设提供了支持，但关于安全性信念的假设未得到支持。文中讨论了对健康传播研究和实践的启示。
