Improving demand for quality water: salience, water quality judgement and willingness to pay for water testing

Last registered on June 01, 2023
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Pre-Trial

Trial Information

General Information

Title
Improving demand for quality water: salience, water quality judgement and willingness to pay for water testing
RCT ID
AEARCTR-0010976
Initial registration date
February 26, 2023

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
March 08, 2023, 12:20 PM EST

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

Last updated
June 01, 2023, 12:15 AM EDT

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

Locations

Country
India
Region
Gujarat

Primary Investigator

Name
Shagata Mukherjee
Affiliation
Meghnad Desai Academy of Economics
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Other Primary Investigator(s)

PI Name
Sharon Barnhardt
PI Affiliation
CSBC, Ashoka University
Contact Investigator
PI Name
Pavan Mamidi
PI Affiliation
CSBC, Ashoka University
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Additional Trial Information

Status
On going
Start date
2023-02-28
End date
2023-06-30
Keywords
Behavior, Health, Lab, Other
Additional Keywords
water
JEL code(s)
D91, I190
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Through a lab-in-the-field experiment, we will study the effect of two individual-level video-based interventions to improve the salience of water quality and demand for quality testing of drinking water. Outcomes will be measured through a behavioural game and a post-game survey at a lab on day one, and through takeup of household water quality testing offered at the household on day two.
External Link(s)

Registration Citation

Citation
Barnhardt, Sharon , Pavan Mamidi and Shagata Mukherjee. 2023. "Improving demand for quality water: salience, water quality judgement and willingness to pay for water testing." AEA RCT Registry. June 01. https://doi.org/10.1257/rct.10976-2.0
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Experimental Details

Interventions

Intervention(s)
Two short video-based interventions, each 2-3 minutes long, delivered at the individual level, aimed at improving the salience of water quality and increasing the demand for scientific testing of water quality.

Intervention Start Date
2023-03-01
Intervention End Date
2023-04-15

Primary Outcomes

Primary Outcomes (end points)
Demand for scientific testing of water quality (measured through willingness to pay for testing drinking water).
Primary Outcomes (explanation)
Willingness to pay for testing will be elicited through a (a) post-intervention incentive-compatible game, as well as through (b) household takeup of a bundle of tests of water quality of drinking water for a fee, which will be offered at the house the next day.

Secondary Outcomes

Secondary Outcomes (end points)
Salience of water quality in decision-making about water
Knowledge of the linkage between water quality and health
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
The experiment will test two sets of videos about water quality. And measure impact through (a) post-intervention an incentive compatible behavioural taste-or-test game and (b) a post-game survey, both immediately after. A third measure will be obtained at the household the next day,
Experimental Design Details
The two video treatments will be cross-randomized and delivered at the individual level, and stratified by village and gender.
Treatment 1 arms: Negative frame, positive frame, control
Treatment 2 arms: Scientific testing of water, control

Stratified by gender, village, and T1 X T2, individuals will be randomly assigned to a discount of one of three levels. This discount voucher will apply for the household water testing offered at the households on the next day.

An individual's water sample for the taste-or-test game will be randomly assigned, stratified by gender, village, and T1 X T2.
Randomization Method
Computer randomization of all treatments.
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1250 individuals
Sample size: planned number of observations
1250 individuals
Sample size (or number of clusters) by treatment arms
T1: 525 individuals control; 350 individuals positive frame, 350 individuals negative frame.
T2: 525 + 175 individuals control; 525 individuals T1

175 individuals will be pure control (assigned to control video for both treatments; no post-intervention game)
175 individuals will be control (assigned to control video for both treatments; with game)
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Ashoka University
IRB Approval Date
2023-03-01
IRB Approval Number
22-X-10005-Selva
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