Understanding Ethnic Cooperation: Evidence from Experiments in Kenya and Tanzania

Last registered on May 28, 2013

Pre-Trial

Trial Information

General Information

Title
Understanding Ethnic Cooperation: Evidence from Experiments in Kenya and Tanzania
RCT ID
AEARCTR-0000016
First published
May 28, 2013, 7:50 PM EDT

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

Locations

Region

Primary Investigator

Affiliation
University of California, Berkeley

Other Primary Investigator(s)

PI Affiliation
Stanford University
PI Affiliation
Norwegian School of Economics
PI Affiliation
MIT
PI Affiliation
Norwegian School of Economics
PI Affiliation
University of California, Berkeley
PI Affiliation
Norwegian School of Economics

Additional Trial Information

Status
Completed
Start date
2012-07-16
End date
2013-02-14
Secondary IDs
Abstract
Ethnic polarization is often linked to underdevelopment and poor governance. What amplifies and what mitigates ethnic tensions amongst individuals in a society? This project aims to understand how subtle and moderate changes in context can impact economic behavior. We use behavioral economics experiments to measure altruism, cooperation, and expected generosity in within-group and across-group interactions. Using “priming” within the lab, we identify if these behavioral outcomes vary with the increased situational salience of ethnic identity, national identity, or political competition. We replicate our design at two time points in Nairobi, Kenya (with the second round being close in time to the 2013 national elections) to examine how election proximity might affect behavior, and in the capital (Dar es Salaam) of neighboring Tanzania to explore how differing political histories can shape current social interactions.
External Link(s)

Registration Citation

Citation
, et al. 2013. "Understanding Ethnic Cooperation: Evidence from Experiments in Kenya and Tanzania." AEA RCT Registry. May 28. https://doi.org/10.1257/rct.16
Former Citation
, et al. 2013. "Understanding Ethnic Cooperation: Evidence from Experiments in Kenya and Tanzania." AEA RCT Registry. May 28. https://www.socialscienceregistry.org/trials/16/history/87
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Different subject priming treatments in the lab. See the attached pre-analysis plan for details.
Intervention Start Date
2012-07-16
Intervention End Date
2013-02-14

Primary Outcomes

Primary Outcomes (end points)
Choices in multiple lab experimental games. See the attached pre-analysis plan for details.
Primary Outcomes (explanation)
See the attached pre-analysis plan for details.

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
See the attached pre-analysis plan for details.
Experimental Design Details
See the attached pre-analysis plan for details.
Randomization Method
Computer random number generator. See the attached pre-analysis plan for details.
Randomization Unit
Individual
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
2098 individuals (across Kenya and Tanzania)
Sample size: planned number of observations
2098 individuals (across Kenya and Tanzania)
Sample size (or number of clusters) by treatment arms
See the attached pre-analysis plan for details.
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
Innovations for Poverty Action, Kenya IRB
IRB Approval Date
2012-07-07
IRB Approval Number
No approval #; signed by Carolyne Nekesa
IRB Name
Stanford University IRB
IRB Approval Date
2012-07-05
IRB Approval Number
#24582
IRB Name
University of California, Berkeley - Committee on the Protection of Human Subjects
IRB Approval Date
2012-07-01
IRB Approval Number
#2012-04-4287
Analysis Plan

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Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
Yes
Intervention Completion Date
February 14, 2013, 12:00 +00:00
Data Collection Complete
Yes
Data Collection Completion Date
February 14, 2013, 12:00 +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
2098 individuals (across Kenya and Tanzania)
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
2098 individuals (across Kenya and Tanzania)
Final Sample Size (or Number of Clusters) by Treatment Arms
See pre-analysis plan for details.
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials