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Effect of Light-Touch Psychological Interventions on Economic and Psychological Outcomes: Pre-Analysis Plan
Last registered on October 31, 2020

Pre-Trial

Trial Information
General Information
Title
Effect of Light-Touch Psychological Interventions on Economic and Psychological Outcomes: Pre-Analysis Plan
RCT ID
AEARCTR-0002850
Initial registration date
March 31, 2018
Last updated
October 31, 2020 3:07 PM EDT
Location(s)

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Primary Investigator
Affiliation
University of Birmingham
Other Primary Investigator(s)
PI Affiliation
University of Oxford
Additional Trial Information
Status
On going
Start date
2017-10-01
End date
2021-02-01
Secondary IDs
Abstract
Behavioral constraints may explain part of low demand for preventive health products. We test the effects of two light-touch psychological interventions on water chlorination and related health and economic outcomes using a randomized controlled trial among 3750 women in rural Kenya. One intervention encourages participants to visualize alternative realizations of the future; one builds participants' ability to make concrete plans to achieve goals. Both interventions include information on health benefits of chlorination.

UPDATE: A long-term follow-up survey was conducted with the entire experimental sample between July--December 2020 to measure treatment effects between 30-36 months after the interventions took place. An amendment to the original PAP which pre-specifies the analysis of the new data has been posted.
External Link(s)
Registration Citation
Citation
John, Anett and Kate Orkin. 2020. "Effect of Light-Touch Psychological Interventions on Economic and Psychological Outcomes: Pre-Analysis Plan." AEA RCT Registry. October 31. https://doi.org/10.1257/rct.2850-2.0.
Former Citation
John, Anett, Anett John and Kate Orkin. 2020. "Effect of Light-Touch Psychological Interventions on Economic and Psychological Outcomes: Pre-Analysis Plan." AEA RCT Registry. October 31. http://www.socialscienceregistry.org/trials/2850/history/78927.
Sponsors & Partners

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Experimental Details
Interventions
Intervention(s)
See PAP
Intervention Start Date
2017-11-01
Intervention End Date
2018-02-28
Primary Outcomes
Primary Outcomes (end points)
See PAP
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
See PAP
Experimental Design Details
Not available
Randomization Method
See PAP
Randomization Unit
See PAP
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
See PAP
Sample size: planned number of observations
See PAP
Sample size (or number of clusters) by treatment arms
See PAP
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Princeton Institutional Review Board
IRB Approval Date
2017-09-19
IRB Approval Number
7376
IRB Name
KENYA MEDICAL RESEARCH INSTITUTE (KEMRI) - SCIENTIFIC AND ETHICS REVIEW UNIT
IRB Approval Date
2020-07-03
IRB Approval Number
KEMRI/RES/7/3/1
Analysis Plan
Analysis Plan Documents
SOBC3_PAP_2018-03-30_FINAL.pdf

MD5: f670252a1bdb763bfabcfa190d6209f0

SHA1: 0480fcd11f2ba2498274efac7caa40772453cfd0

Uploaded At: March 31, 2018

PAP Amendment 2020: Long-term follow-up

MD5: 07a35d8dbd0e6a9cc456bed6e42de0f6

SHA1: ab0f2cef8b720621f37e1f4ee707ad9c6c90fbd2

Uploaded At: October 31, 2020