People use search engines to find answers to questions related to their health, finances, or other socially relevant issues. However, most users are unaware that search results are considerably influenced by search engine marketing (SEM). SEM measures are driven by commercial, political, or other motives. Due to these motivations, two questions arise: What information quality is mediated through SEM? And how is collecting documents of different quality affecting user knowledge gain? Both questions are not considered by existing models of information behavior. Hence, the doctoral research project described in this paper aims to develop and empirically test an information search behavior model on the influences of SEM on user knowledge gain and thereby contribute to the search as learning body of research.

翻译：人们使用搜索引擎来寻找与健康、财务或其他社会相关问题有关的问题的答案;然而,大多数用户不知道搜索结果受到搜索引擎营销(SEM)的重大影响。由于这些动机,SEM措施受到商业、政治或其他动机的驱动。由于这些动机,产生了两个问题:SEM对什么信息质量进行调解?如何收集影响用户知识收益的不同质量文件?现有的信息行为模式并不考虑这两个问题。因此,本文件所描述的博士研究项目旨在开发和实证测试关于SEM对用户知识收益的影响的信息搜索行为模式,从而推动作为学习研究机构的搜索工作。