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Do saliency of extreme actions to secure a COVID-19 vaccine increase demand for the vaccine?
Last registered on March 03, 2021

Pre-Trial

Trial Information
General Information
Title
Do saliency of extreme actions to secure a COVID-19 vaccine increase demand for the vaccine?
RCT ID
AEARCTR-0007285
Initial registration date
March 02, 2021
Last updated
March 03, 2021 11:00 AM EST
Location(s)

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Primary Investigator
Affiliation
University of Wyoming
Other Primary Investigator(s)
PI Affiliation
George Mason University
Additional Trial Information
Status
In development
Start date
2021-03-03
End date
2021-06-30
Secondary IDs
Abstract
This study aims to examine if saliency of extreme actions to secure a COVID-19 affects demand for the vaccine. Specifically, we will design an economic experiment to test the effect on vaccine demand from information about rich people jumping the line or information about vaccine hunters. We will use willingness-to-pay (WTP) for a service to facilitate the booking of vaccine appointments as a proxy for demand for the vaccine itself.
External Link(s)
Registration Citation
Citation
Mollerstrom, Johanna and Linda Thunstrom. 2021. "Do saliency of extreme actions to secure a COVID-19 vaccine increase demand for the vaccine?." AEA RCT Registry. March 03. https://doi.org/10.1257/rct.7285-1.0.
Experimental Details
Interventions
Intervention(s)
This study aims to examine if saliency of extreme actions to secure a COVID-19 affects demand for the vaccine. Specifically, we will design an economic experiment to test the effect on vaccine demand from information about rich people jumping the line or information about vaccine hunters. We will do so by randomizing participants into one of the following treatments:
1. Treatment with information on rich people jumping the vaccine line
2. Treatment with information about vaccine hunters
3. Treatment with information about the vaccine development process
4. Control information (no information beyond the one given to all participants)
Intervention Start Date
2021-03-03
Intervention End Date
2021-04-30
Primary Outcomes
Primary Outcomes (end points)
WTP for a vaccine service that helps facilitate the booking of a vaccine appointment.
Primary Outcomes (explanation)
To elicit WTP, we will use a multiple price list.
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We will design an economic experiment to test the effect on vaccine demand from information about rich people jumping the line or information about vaccine hunters. We will do so by randomizing participants into one of the following treatments:
1. Treatment with information on rich people jumping the vaccine line
2. Treatment with information about vaccine hunters
3. Treatment with information about the safety of the vaccine
4. Control information (no information beyond the one given to all participants)
After being subjected to the treatments, all participants will be asked about their WTP for a service that helps with the identification and booking of an appointment to get a vaccine.
Experimental Design Details
Not available
Randomization Method
By the computer.
Randomization Unit
Individual.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
None.
Sample size: planned number of observations
1500
Sample size (or number of clusters) by treatment arms
Participants will be randomized across all four treatments, such that we expect 375 participants in each treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Institutional Review Board at George Mason University
IRB Approval Date
2021-03-02
IRB Approval Number
1724890-1