ABSTRACT
PURPOSE: To assess how previous experiences and new information contributed to COVID-19 vaccine intentions. DESIGN: Online survey (N = 1264) with quality checks. SETTING: Cross-sectional U.S. survey fielded June 22-July 18, 2020. SAMPLE: U.S. residents 18+; quotas reflecting U.S. Census, limited to English speakers participating in internet panels. MEASURES: Media literacy for news content and sources, COVID-19 knowledge; perceived usefulness of health experts; if received flu vaccine in past 12 months; vaccine willingness scale; demographics. ANALYSIS: Structural equation modelling. RESULTS: Perceived usefulness of health experts (b = .422, P < .001) and media literacy (b = .162, P < .003) predicted most variance in vaccine intentions (R-squared=31.5%). A significant interaction (b = .163, P < .001) between knowledge (b = -.132, P = .052) and getting flu shot (b = .185, P < .001) predicted additional 3.5% of the variance in future vaccine intentions. An increase in knowledge of COVID-19 associated with a decrease in vaccine intention among those declining the flu shot. CONCLUSION: The interaction result suggests COVID-19 knowledge had a positive association with vaccine intention for flu shot recipients but a counter-productive association for those declining it. Media literacy and trust in health experts provided strong counterbalancing influences. Survey-based findings are correlational; thus, predictions are based on theory. Future research should study these relationships with panel data or experimental designs.
ABSTRACT
Objective: False news about vaccination shared in digital spaces is a major problem that harms informed health choices. Drawing from processing fluency theory, we propose that an infographic – a visual representation of information – reduces cognitive load, thereby helping people retain and process the necessary information to discern truth from falsehood in health news. Design: Web-administered experiment. Setting: US web-based experiment on Qualtrics. Method: A national sample of participants was randomly assigned to one of the three conditions: a news literacy infographic, the same information but text-only, or a control group (a blank page). After the short intervention, study participants were shown false news about vaccinations and asked to make judgements about this news. Results: Our study found that people in the infographic condition were better able to verify false news than others. They also showed lower trust in false news articles and higher confidence in their judgement than those in the control condition. Conclusion: Findings further our understanding of how visuals accompanied by text, such as an infographic, can improve the quality of health education. During the current problem of digital spaces filled with misinformation, using a short intervention with visuals can help audiences determine the credibility of information they encounter about vaccines.
ABSTRACT
YouTube videos have been used to inform and misinform the public about the safety of vaccines related to health threats such as measles and COVID-19. Understanding how such videos can promote the sharing of accurate vaccine safety information is of the utmost importance if health researchers are to combat the spread of misinformation and encourage widespread uptake of vaccines. Through the lens of prospect theory, this study conducted a 2 (framing: loss v. gain) x 2 (evidence type: episodic v. thematic) x 2 (speaker expertise: expert v. non-expert) between-subject factorial experiment in which a sample of N = 400 US adults over the age of 18 recruited through MTurk were asked their intention to share vaccine safety information with others after watching a manipulated YouTube video. The results showed that loss framing was associated with perceived MMR severity which was, in turn, associated with the likelihood that participants would share MMR vaccine information with others, via any means. However, this process varied depending on the type of evidence delivered, and the expertise of the speaker. Results and limitations are discussed in the context of vaccine communication and social media.