Memory for Flu Facts and Myths and Effects on Vaccine Intentions

Study Overview
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Brief Summary
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Objectives: To determine whether people systematically misremember the myths (false information) as true, and to assess effects on perceptions of risk and behavioral intentions.

Detailed Description
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Public information campaigns often warn people about false and unreliable medical claims by juxtaposing myths and facts. The effectiveness of such communications has rarely been assessed. We assessed whether people systematically misremember the myths (false information) as true, and to assess effects on perceptions of risk and behavioral intentions. In an experimental study, participants read either a published CDC flyer on Facts and Myths about the flu vaccine, or a Facts Only version; a separate control group read no flyer. Participants completed the outcome measures either immediately or after 30 minutes. Primary measures were memory for information about the flu presented in the flyer, ratings of perceived risks associated with the flu, and personal intentions to get vaccinated in the upcoming season. After a delay of 30 minutes, participants who read the Facts and Myths flyer systematically misremembered myths as facts. Both versions of the flyer had the immediate effect of increasing intentions to get a flu vaccine, compared to the control group. After 30 minutes, however, participants who read the Facts and Myths flyer reported lower intentions to get vaccinated, compared to those who read the same flyer with no delay, and compared to all participants who read the Facts Only flyer. In sum, people show a bias to think that incompletely remembered information is true, turning myths into facts. Hence public information campaigns should emphasize information that is true. Repeating false information, even as a warning, can create the unintended consequence of belief in the information.

Official Title
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Myths and Facts About the Flu: Health Education Campaigns Can Reduce Vaccination Intentions

Conditions
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Influenza Vaccines

Intervention / Treatment
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* Behavioral: Memory for truth


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Must be able to read and write fluent English Exclusion Criteria: -

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 26 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Educational/Counseling/Training
Allocation: Randomized
Intervention Model: Factorial Assignment
Masking: Double


Arms and Interventions

| Intervention/Treatment |
| --- |
|Behavioral: Memory for truth|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Memory for truth of information in a flyer. |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Intention to get flu vaccine in upcoming season. |  |  |