Breaking the Bubble

Last registered on November 15, 2024
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Pre-Trial

Trial Information

General Information

Title
Breaking the Bubble
RCT ID
AEARCTR-0014834
Initial registration date
November 14, 2024

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 15, 2024, 2:01 PM EST

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

Last updated
November 15, 2024, 5:19 PM EST

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

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Primary Investigator

Name
Adrian Blattner
Affiliation
Stanford
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Other Primary Investigator(s)

PI Name
Pedro Sant'Anna
PI Affiliation
MIT
Contact Investigator
PI Name
Vlasta Rasocha
PI Affiliation
Stanford
Contact Investigator

Additional Trial Information

Status
In development
Start date
2024-09-01
End date
2025-06-30
Keywords
Behavior, Electoral, Firms & Productivity, Governance, Labor
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
In this project, we study the effects of interactions between racial and political groups in work place settings. We organize job trainings on an online platform in Brazil that expose participants to a co-worker of either the same race and political identity or to a co-worker of a different race or political identity. We measure the effect of the interaction on productivity and preferences for discrimination.
External Link(s)

Registration Citation

Citation
Blattner, Adrian, Vlasta Rasocha and Pedro Sant'Anna. 2024. "Breaking the Bubble." AEA RCT Registry. November 15. https://doi.org/10.1257/rct.14834-1.1
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2025-04-01
Intervention End Date
2025-04-30

Primary Outcomes

Primary Outcomes (end points)
Productivity during the job training
Preferences for discrimination in a co-worker choice
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We randomly expose participants to a co-worker of either the same political affiliation and race, or a co-worker of a different political affiliation or race. We measure co-workers' productivity and preferences for discrimination as a result of the interaction.
Experimental Design Details
Not available
Randomization Method
Computer
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1000-2000 participants
Sample size: planned number of observations
1000-2000
Sample size (or number of clusters) by treatment arms
300-400
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Breaking the Bubble – The Determinants and Effects of Contact
IRB Approval Date
2024-07-01
IRB Approval Number
IRB-61007
Analysis Plan