Identity Heterogeneity and Demand for Redistribution

Last registered on October 03, 2025
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Pre-Trial

Trial Information

General Information

Title
Identity Heterogeneity and Demand for Redistribution
RCT ID
AEARCTR-0016780
Initial registration date
September 30, 2025

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
October 03, 2025, 10:25 AM EDT

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

Locations

Country
Netherlands
Region

Primary Investigator

Name
Maite Laméris
Affiliation
University of Groningen
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Other Primary Investigator(s)

PI Name
Juliette de Wit
PI Affiliation
University of Groningen
Contact Investigator

Additional Trial Information

Status
In development
Start date
2025-10-06
End date
2026-10-01
Keywords
Behavior, Welfare
Additional Keywords
Identity, Redistribution
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
We study the effect of national identity on preferences for redistribution using an online survey experiment conducted in the LISS Panel, a representative household panel in the Netherlands. We consider heterogeneity in national identity in our study design.
External Link(s)

Registration Citation

Citation
de Wit, Juliette and Maite Laméris. 2025. "Identity Heterogeneity and Demand for Redistribution." AEA RCT Registry. October 03. https://doi.org/10.1257/rct.16780-1.0
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2025-10-06
Intervention End Date
2025-10-28

Primary Outcomes

Primary Outcomes (end points)
Allocation decision (self vs. recipient); incentivised
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
4 statements capturing redistributive preferences (reducing income differences, the role of merit in relation to income differences, the role of the government in reducing income differences, and reducing differences among social classes); not incentivised
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
We conduct an online survey experiment among members of the LISS Panel, a representative household panel in the Netherlands, in which we study the effect of heterogeneity in national identity on preferences for redistribution. We capture redistribution preferences by an incentivised allocation decision, in which a decision-maker is asked to distribute money over themselves and a recipient. The survey experiment has three treatment conditions and one control condition. In each treatment condition, we vary the identity of the recipient. In the control condition, the recipient is anonymous.
Experimental Design Details
Not available
Randomization Method
The randomization is done by computer.
Randomization Unit
The unit of randomization is the individual.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
2800 individual respondents.
Sample size: planned number of observations
2800 individual respondents.
Sample size (or number of clusters) by treatment arms
700 individuals in Treatment A, 700 participants in Treatment B, 700 individuals in Treatment C, 700 individuals in control condition.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Based on a power analysis conducted with Optimal Design with alpha at 5% and beta at 80% and assuming a standardized effect size of 0.15, we need approximately 700 respondents in each treatment condition. With 4 conditions, this results in a final sample of 2800 respondents.
Supporting Documents and Materials

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IRB

Institutional Review Boards (IRBs)

IRB Name
The Institutional Review Board of the Faculty of Economics and Business at the University of Groningen
IRB Approval Date
2025-09-18
IRB Approval Number
FEB-20250709-01547
Analysis Plan

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