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

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
April 02, 2018, 11:08 AM EDT

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

Last updated
October 31, 2020, 3:07 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Region

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
Former 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://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
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

PAP Amendment 2020: Long-term follow-up

MD5: 07a35d8dbd0e6a9cc456bed6e42de0f6

SHA1: ab0f2cef8b720621f37e1f4ee707ad9c6c90fbd2

Uploaded At: October 31, 2020

SOBC3_PAP_2018-03-30_FINAL.pdf

MD5: f670252a1bdb763bfabcfa190d6209f0

SHA1: 0480fcd11f2ba2498274efac7caa40772453cfd0

Uploaded At: March 31, 2018

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
No
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials