UCLA Electronic Theses and Dissertations
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UCLA UCLA Electronic Theses and Dissertations Title Misinformation on the Internet?: A Study of Vaccine Safety Beliefs Permalink https://escholarship.org/uc/item/57z2v8j3 Author Doty, Colin Publication Date 2015 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA Los Angeles Misinformation on the Internet?: A Study of Vaccine Safety Beliefs A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Information Studies by Colin C. Doty 2015 © Copyright by Colin C. Doty 2015 ABSTRACT OF THE DISSERTATION Misinformation on the Internet?: A Study of Vaccine Safety Beliefs by Colin C. Doty Doctor of Philosophy in Information Studies University of California, Los Angeles, 2015 Professor Leah A. Lievrouw, Chair Concerns about misinformation on the Internet usually focus on the amount of misinformation available, the ease of retrieving it, the speed with which it spreads, or the lack of editorial oversight. Yet none of these would be cause for concern if no one was misinformed. Indeed, what constitutes misinformation is often determined by who believes it. Hence the most important consideration may be a focus on why people believe. To explore this, this study reports results from a qualitative content analysis of online information about vaccine safety— with a particular focus on user comments—supplemented by exploratory interviews. The study examines how people on all sides of the debate use evidence to support their beliefs about vaccine safety. It also reflects upon the relationship between the Internet and those beliefs. The most common beliefs about vaccine safety are beliefs about toxicity, beliefs about the cumulative effects of vaccines, beliefs about the premise of immunization, and beliefs about the compromised integrity of the medical system. Contrary to popular conceptions, these beliefs do not divide easily into binaries of pro-vaccination and anti-vaccination. Rather, it is as if ii available beliefs were arrayed in a buffet from which each believer chooses an individualized meal. The selection of beliefs is limited, as the same beliefs recur over and over in the data, yet each believer combines the limited selections into diverse belief profiles. People justify these beliefs using risk-benefit calculations based in reason and authority, both of which are heavily influenced by personal experience, a kind of evidence that may be more prominent on the Internet than elsewhere. These basic tactics are employed in complex patterns that vary across beliefs, believers and situations. Perhaps surprisingly, while each person uses the tactics in different ways and to different degrees, the same basic tactics are used on all sides of the vaccine safety debate, suggesting a more complicated belief landscape than the popular conception. In turn, this suggests that it is not merely that misinformation affects what we believe, but also that what we believe appears to affect how we understand misinformation. iii The dissertation of Colin C. Doty is approved. Jonathan Furner Christopher M. Kelty Charles Goodwin Leah A. Lievrouw, Committee Chair University of California, Los Angeles 2015 iv Dedication This dissertation is dedicated to my father, who died during the second year of my doctoral coursework. After a long career as a business executive, he had semi-retired and was teaching management courses at various colleges. This project is therefore the culmination of a long journey toward his legacy as Professor Doty. v Table of Contents CHAPTER ONE ............................................................................................................................. 1 INTRODUCTION .......................................................................................................................... 1 Overview ..................................................................................................................................... 1 Problem and General Context ..................................................................................................... 1 The Case of Vaccine Safety Beliefs ............................................................................................ 5 CHAPTER TWO ............................................................................................................................ 8 BACKGROUND ............................................................................................................................ 8 Information and Misinformation ................................................................................................. 8 Belief ......................................................................................................................................... 13 Evidence .................................................................................................................................... 15 Evidence Evaluation .............................................................................................................. 21 Criteria for Evaluation ....................................................................................................... 33 Accuracy......................................................................................................................... 34 Authority. ....................................................................................................................... 38 Credibility....................................................................................................................... 40 Trust. .............................................................................................................................. 43 Authenticity. ................................................................................................................... 46 Vaccine Safety........................................................................................................................... 48 CHAPTER THREE ...................................................................................................................... 55 METHODOLOGY ....................................................................................................................... 55 Purpose of the Study ................................................................................................................. 55 Research Questions ................................................................................................................... 55 Procedures ................................................................................................................................. 55 Definitions ................................................................................................................................. 56 Internet Thematic Analysis ....................................................................................................... 57 Data Collection ...................................................................................................................... 57 Data Analysis ......................................................................................................................... 59 Interviews .................................................................................................................................. 64 Recruitment ........................................................................................................................... 64 Procedure ............................................................................................................................... 66 Analysis ................................................................................................................................. 66 Limitations of the Study ............................................................................................................ 67 vi CHAPTER FOUR ......................................................................................................................... 69 WHAT PEOPLE BELIEVE ABOUT VACCINE SAFETY ......................................................... 69 Beliefs about Toxicity ............................................................................................................... 74 Autism ................................................................................................................................... 78 Beliefs about Cumulative Effects .............................................................................................. 81 Beliefs about the Premise of Immunization .............................................................................. 84 Beliefs about Compromised Integrity ....................................................................................... 92 Beliefs about Civil Society .................................................................................................... 97 A Buffet of Beliefs .................................................................................................................... 99 CHAPTER FIVE ........................................................................................................................ 108 HOW PEOPLE JUSTIFY THEIR BELIEFS ABOUT VACCINE SAFETY ............................ 108 Risk/Benefit ............................................................................................................................. 109 Reason ....................................................................................................................................