Maasai Watchman Field Experiment

Last registered on December 16, 2019

Pre-Trial

Trial Information

General Information

Title
Maasai Watchman Field Experiment
RCT ID
AEARCTR-0002692
Initial registration date
February 14, 2018
Last updated
December 16, 2019, 6:17 AM EST

Locations

Primary Investigator

Affiliation
University of Toronto

Other Primary Investigator(s)

Additional Trial Information

Status
On going
Start date
2018-05-28
End date
2020-02-01
Secondary IDs
Abstract
I create randomised variation in farm security by matching randomly selected Kenyan smallholding farmers with subsidized Maasai watchmen to protect farms during the main agricultural season. I explore the effect of theft and property crime by testing whether farmers engage in different types of production when their farms are more secure against theft. I further explore how social networks are used to substitute for imperfect protection of property in an environment where state institutions are unable to fully protect farms, and how theft is used to sanction those who neglect social obligations.
External Link(s)

Registration Citation

Citation
Dyer, Julian. 2019. "Maasai Watchman Field Experiment." AEA RCT Registry. December 16. https://doi.org/10.1257/rct.2692-13.2
Former Citation
Dyer, Julian and Julian Dyer. 2019. "Maasai Watchman Field Experiment." AEA RCT Registry. December 16. https://www.socialscienceregistry.org/trials/2692/history/58793
Experimental Details

Interventions

Intervention(s)
The intervention in this project is matching farming households to high-quality, trusted Maasai watchmen at a heavily subsidized rate. The intention of this intervention is to cause variation in the security of farms during the long rainy season.
Intervention Start Date
2018-06-13
Intervention End Date
2019-02-15

Primary Outcomes

Primary Outcomes (end points)
Share of land used for growing high-value or theft-prone crops, and decision to plant new crops.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
This experiment will consist of a core sample who will be the treatment and control group, answering the main research questions, and a supplementary spillover sample that will be used to estimate the spillovers on crime of the intervention. The core sample will be cluster randomized by village into treatment or control.
Experimental Design Details
See Pre Analysis Plan for details.
Randomization Method
Randomization done in office by computer. See Pre Analysis Plan for details.
Randomization Unit
Village. See Pre Analysis Plan for details.
Was the treatment clustered?
Yes

Experiment Characteristics

Sample size: planned number of clusters
60 Villages, 10 farming households per village.
Sample size: planned number of observations
Target is 600 farming households
Sample size (or number of clusters) by treatment arms
200 farmers treated, 400 control.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
See Pre Analysis Plan.
IRB

Institutional Review Boards (IRBs)

IRB Name
University of Toronto Research Ethics Board
IRB Approval Date
2017-05-29
IRB Approval Number
Protocol Reference # 34160
Analysis Plan

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Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials