x

Please fill out this short user survey of only 3 questions in order to help us improve the site. We appreciate your feedback!
The public's opinions on the effect on COVID-19 vaccine intentions from information about people's extreme actions to get vaccinated
Last registered on May 11, 2021

Pre-Trial

Trial Information
General Information
Title
The public's opinions on the effect on COVID-19 vaccine intentions from information about people's extreme actions to get vaccinated
RCT ID
AEARCTR-0007656
Initial registration date
May 10, 2021
Last updated
May 11, 2021 11:48 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
University of Wyoming
Other Primary Investigator(s)
PI Affiliation
George Mason University
Additional Trial Information
Status
In development
Start date
2021-05-10
End date
2021-06-15
Secondary IDs
Abstract
In this study, participants will be asked to predict and explain the effects on COVID-19 vaccine intentions from two types of information about extreme behavior to secure access to the vaccine. More precisely, participants in treatment 1 will be asked to predict and explain the effect on vaccine intentions from information about some people taking extreme actions to jump the line for the vaccines, and participants in treatment 2 will be asked to predict and explain the effect on vaccine intentions from information about so called "vaccine hunters." (Participants' predictions will later be compared to the actual outcome, i.e., results from a previous study that documents the effects on vaccine intentions from the information about the extreme behavior described in treatment 1 and 2 in the current study.)
External Link(s)
Registration Citation
Citation
Mollerstrom, Johanna and Linda Thunstrom. 2021. "The public's opinions on the effect on COVID-19 vaccine intentions from information about people's extreme actions to get vaccinated." AEA RCT Registry. May 11. https://doi.org/10.1257/rct.7656-1.0.
Experimental Details
Interventions
Intervention(s)
Participants will receive a description of extreme behavior that has been reported in popular media to secure access to a COVID-19 vaccine prior to being eligible for the vaccine in the U.S. Participants in treatment 1 will get a description of some people taking extreme actions to jump the line for vaccinations, while participants in treatment 2 will get a description of so called vaccine hunters. Participants will thereafter be asked to predict and explain the effect on vaccine intentions from information about the extreme actions to secure the vaccine that were described to them. (Participants' predictions will later be compared to the actual outcome, i.e., results from a previous study that documents the effects on vaccine intentions from the information about the extreme behavior described in treatment 1 and 2 in the current study.)
Intervention Start Date
2021-05-11
Intervention End Date
2021-06-11
Primary Outcomes
Primary Outcomes (end points)
Participants prediction of the effect on COVID-19 vaccine intentions (increase/decrease/are unaffected) from the extreme behavior described to them. Participants' open ended and multiple-choice answers as to why these results occur.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Participants will be randomized into one of two treatments. Participants in treatment 1 will get a description of some people taking extreme actions to jump the line for vaccinations, while participants in treatment 2 will get a description of so called vaccine hunters. Participants will thereafter be asked to predict and explain the effect on vaccine intentions from information about the extreme actions to secure the vaccine that were described to them. Participants' predictions will be compared to the actual outcome, i.e., results from a previous study that documents the effects on vaccine intentions from the information about the extreme behavior described in treatment 1 and 2 in the current study, and participants who predicted the actual outcome will be financially rewarded.
Experimental Design Details
Randomization Method
By computer.
Randomization Unit
Individual.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
0
Sample size: planned number of observations
800
Sample size (or number of clusters) by treatment arms
400 in treatment 1, 400 in treatment 2.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB at George Mason University
IRB Approval Date
2021-05-10
IRB Approval Number
1756922-1
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS