Running head: CREDIBILITY CUES AND SEARCH ENGINE RESULT SELECTION 1 The Effects of Credibility Cues on the Selection of Search Engine Results Julian Unkel & Alexander Haas LMU Munich Author Note Julian Unkel, Department of Communication Studies and Media Research, LMU Munich, and Munich Center for Internet Research, Bavarian Academy of Sciences; Alexander Haas, Department of Communication Studies and Media Research, LMU Munich. This research was supported by the LMUexcellent Junior Researcher Fund. The authors would like to thank Nora Denner, Lena Storck, and especially Ramona Berger for their assistance with experiment supervision and coding, and the reviewers for their valuable suggestions. Correspondence concerning this article should be addressed to Julian Unkel, Department of Communication Studies and Media Research, LMU Munich, Oettingenstr. 67, 80538 Munich, Germany. E-mail:
[email protected] CREDIBILITY CUES AND SEARCH ENGINE RESULT SELECTION 2 Abstract Web search engines act as gatekeepers when people search for information online. Research has shown that search engine users seem to trust the search engines’ ranking uncritically and mostly select top-ranked results. This study further examines search engine users’ selection behavior. Drawing from the credibility and information research literature, we test whether the presence or absence of certain credibility cues influences the selection probability of search engine results. In an observational study, participants (N = 247) completed two information research tasks on preset search engine results pages, on which three credibility cues (source reputation, message neutrality, and social recommendations) as well as the search result ranking were systematically varied. The results of our study confirm the significance of the ranking.