Video-based persuasion

Last registered on July 26, 2022

Pre-Trial

Trial Information

General Information

Title
Video-based persuasion
RCT ID
AEARCTR-0009123
Initial registration date
March 21, 2022

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
March 28, 2022, 7:28 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
July 26, 2022, 12:12 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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Primary Investigator

Affiliation
University of California, Berkeley

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2022-04-15
End date
2023-04-15
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This study examines the effect of persuasive videos on vaccination. Further study information will be released after data collection has been completed to avoid demand effects.
External Link(s)

Registration Citation

Citation
Otis, Nicholas. 2022. "Video-based persuasion." AEA RCT Registry. July 26. https://doi.org/10.1257/rct.9123
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2022-04-15
Intervention End Date
2023-04-15

Primary Outcomes

Primary Outcomes (end points)
Vaccination (including proxy measures)
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Further study information will be released after data collection has been completed to avoid demand effects.
Experimental Design Details
Not available
Randomization Method
Randomization is done by computer.
Randomization Unit
Randomization takes place at the individual level.
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
After creating a test video passing pre-registered exclusion criteria, at least 450 participants will produce videos designed to increase vaccination.
Sample size: planned number of observations
Each video survey will be sent to a minimum of 15 participants, for a minimum of 450*15 video recipients. The following update was made after data from 24 recipients had already been collected: Additionally, there will be three control/reference conditions: A minimum of 450 participants will be sent a video designed by an international health organization, 450 will be sent a video from a Kenyan health worker, and 750 will be sent a pure control with no video content. Note that these sample sizes reflect the minimum number of individuals receiving the survey containing the video, and some may not open the survey and view the content. The analytic sample of the study consists of those who open the survey and view the video. Any attrition before viewing the video occurs pre-treatment and is thus orthogonal to assignment.
Sample size (or number of clusters) by treatment arms
Each video will be sent to a minimum of 15 participants.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
Massachusetts Institute of Technology
IRB Approval Date
2022-01-20
IRB Approval Number
2110000475