COVID-19 Vaccine Messaging, Part 1

Not Applicable

Completed

Interventions: Other: Control message
Other: Baseline message
Other: Personal freedom message
Other: Community interest message
Other: Anger message
Other: Self-interest message
Other: Economic benefit message
Other: Guilt message
Other: Embarrassment message
Other: Economic freedom message
Other: Trust in science message
Other: Not bravery message

Brief Summary: This study tests different messages about vaccinating against COVID-19 once the vaccine becomes available. Participants are randomized to 1 of 12 arms, with one control arm and one baseline arm. We will compare the reported willingness to get a COVID-19 vaccine at 3 and 6 months of it becoming available between the 10 intervention arms to the 2 control arms.

Study participants are recruited online by Lucid, which matches census based sampling in online recruitment.

Recruitment & Eligibility

Inclusion Criteria

Exclusion Criteria

Arm && Interventions

Group	Intervention	Description
Control	Control message	Control message about birdfeeding
Baseline message	Baseline message	These participants will be assigned a message about the benefits of vaccination. All other treatment arms include this baseline language.
Personal freedom	Personal freedom message	Experimental message arm.
Social benefit, community interest	Community interest message	Experimental message arm.
Social pressure- anger	Anger message	Experimental message arm.
Social benefit, self-interest	Self-interest message	Experimental message arm.
Economic benefit	Economic benefit message	Experimental message arm.
Social pressure- guilt	Guilt message	Experimental message arm.
Social pressure- embarrassment	Embarrassment message	Experimental message arm.
Economic freedom	Economic freedom message	Experimental message arm.
Trust in science	Trust in science message	Experimental message arm.
Not bravery arm	Not bravery message	Experimental message arm.

Primary Outcome Measures

Name	Time	Method
Intention to get COVID-19 vaccine	Immediately after intervention, in the same survey in which the intervention message is provided	This is a self reported measure, immediately after the intervention message, of the likelihood of getting a COVID-19 vaccination within 3 months and then 6 months of it becoming available. During analysis, responses among those assigned to different intervention messages will be compared to those in the control group.

Secondary Outcome Measures

Name	Time	Method
Persuade others item	Immediately after intervention, in the same survey in which the intervention message is provided	This is a measure of a willingness to persuade others to take the COVID-19 vaccine.
Fear of those who have not been vaccinated	Immediately after intervention, in the same survey in which the intervention message is provided	This is a measure of a comfort with an unvaccinated individual visiting an elderly friend after a vaccine becomes available
Vaccine confidence scale	Immediately after intervention, in the same survey in which the intervention message is provided	This is a validated scale. This scale will be used to assess the impact of the messages on vaccine confidence. (Outcome assessed only for the half of the sample that answers these items post-treatment)
Social judgment of those who do not vaccinate	Immediately after intervention, in the same survey in which the intervention message is provided	This is a scale composed of 4 items measuring the trustworthiness, selfishness, likeableness, and competence of those who choose not to get vaccinated after a vaccine becomes available

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