Social Identity and Preferences

Last registered on June 03, 2026
View Trial History

Pre-Trial

Trial Information

General Information

Title
Social Identity and Preferences
RCT ID
AEARCTR-0018795
Initial registration date
May 31, 2026

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
June 03, 2026, 9:51 AM EDT

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

Locations

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

Primary Investigator

Name
Margaryta Klymak
Affiliation
King's College London
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Kathryn Vasilaky
PI Affiliation
California Polytechnic State University
Contact Investigator
PI Name
Michelle Brock
PI Affiliation
European Bank for Reconstruction and Development
Contact Investigator

Additional Trial Information

Status
In development
Start date
2026-06-01
End date
2026-07-31
Keywords
Behavior, Crime, Violence, & Conflict
Additional Keywords
Social identity, preferences, Ukraine
JEL code(s)
C93, D63, D74, J71
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
We study how identity salience affects preferences. In an online survey with approximately 2,000 respondents, we randomly assign participants to watch one of two short videos before completing incentivised economic tasks. After the video, respondents complete three tasks.
External Link(s)

Registration Citation

Citation
Brock, Michelle, Margaryta Klymak and Kathryn Vasilaky. 2026. "Social Identity and Preferences." AEA RCT Registry. June 03. https://doi.org/10.1257/rct.18795-1.0
Sponsors & Partners

Sponsors

Experimental Details

Interventions

Intervention(s)
In an online survey with approximately 2,000 respondents, we randomly assign participants to watch one of two short videos before completing incentivised economic tasks. A treatment video primes national identity while a control video covers a neutral topic. After the video, respondents complete three tasks.
Intervention Start Date
2026-06-01
Intervention End Date
2026-07-31

Primary Outcomes

Primary Outcomes (end points)
1. Charity allocation
2. Manager wage allocation
3. Worker reservation wage
4. Social Identity Index
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
This is an online survey of approximately 2,000 respondents in Ukraine, stratified into six cells. Within the survey, each respondent is individually randomised into one of two video groups. After watching the video, all respondents answer identity questions and complete three incentivised economic tasks. Full details of the estimation strategy are set out in the pre-analysis plan.
Experimental Design Details
Not available
Randomization Method
Randomization done by the survey company using a computer.
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
No clusters.
Sample size: planned number of observations
~2,000 individuals
Sample size (or number of clusters) by treatment arms
Approximately ~1,000 respondents per video group
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Social Science and Public Policy, Humanities and Law (SSHL) Research Ethics Subcommittee, King's College London
IRB Approval Date
2026-05-20
IRB Approval Number
RESCM-25/26-46618
Analysis Plan

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information