Willingness to Tweet (replication)

Last registered on November 04, 2022


Trial Information

General Information

Willingness to Tweet (replication)
Initial registration date
October 19, 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
November 04, 2022, 1:40 PM EDT

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


Primary Investigator

Harvard University

Other Primary Investigator(s)

PI Affiliation
Kellogg School of Management
PI Affiliation
University of Chicago
PI Affiliation
NHH Norwegian School of Economics
PI Affiliation
University of Cologne

Additional Trial Information

Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
We replicate our results from AEARCTR-0008432.
External Link(s)

Registration Citation

Bursztyn, Leonardo et al. 2022. "Willingness to Tweet (replication)." AEA RCT Registry. November 04. https://doi.org/10.1257/rct.10269-1.0
Experimental Details


We replicate our intervention from AEARCTR-0008432, varying the existence of a "social cover" associated with making a Tweet about a socially sensitive topic.

Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
Whether or not the participant chooses to authorize the Twitter post
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
(1) An indicator for whether the respondent indicates that the Tweet is misleading
(2) Conditional on (1), an indicator for whether the respondent indicates any concern that the Tweet is misleading about the timing of when they read the article
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We vary the perceived social pressure associated with making a Tweet about a socially sensitive topic.
Experimental Design Details
Participants are shown an article written by Princeton criminologist Patrick Sharkey discussing the likely effect of defunding the police on violent crime and decide whether or not to (privately) join a campaign to oppose defunding the police. They are then told they will have the opportunity to schedule a post to be made on their Twitter account encouraging their followers to sign a petition to oppose defunding the police. The experiment manipulates only one word: whether the post indicates that the participant saw the article before joining the campaign, or after joining the campaign. (They are told that this post will be made public if and when we have reached survey respondents in all US counties. However, given that we are collecting fewer observations than the number of US counties, this will not happen, and thus the posts will never be made public.) We also collect various demographic characteristics of participants.
Randomization Method
Randomization through Qualtrics
Randomization Unit
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
Sample size: planned number of observations
We will ideally recruit 1000 Democrats. However, recruitment is difficult in this setting, and we may be unable to recruit 1000; in our previous experiment we are replicating, we were only able to recruit 523 respondents. We will keep data collection open for two weeks (ending November 2), or until we reach 1000 respondents, whichever comes first.
Sample size (or number of clusters) by treatment arms
Half of the sample in the "Rationale" condition; half in the "No Rationale" condition.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
With 506 respondents, we will have 80% power to detect an 12 percentage point effect (the effect size estimated in the first experiment we replicate) at the 5% level. With 1000 respondents, we will have 80% power to detect a 8.6 percentage point effect at the 5% level.

Institutional Review Boards (IRBs)

IRB Name
University of Chicago Social and Behavioral Sciences IRB
IRB Approval Date
IRB Approval Number


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials