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Child Labor and Illegal Chemical Pesticide Use in Jalal-Abad, Kyrgyzstan: A List Experiment with Randomized Survey Modes

Last registered on June 16, 2025

Pre-Trial

Trial Information

General Information

Title
Child Labor and Illegal Chemical Pesticide Use in Jalal-Abad, Kyrgyzstan: A List Experiment with Randomized Survey Modes
RCT ID
AEARCTR-0016102
Initial registration date
June 15, 2025

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
June 16, 2025, 7:46 AM EDT

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

Locations

Region

Primary Investigator

Affiliation
Hiroshima University

Other Primary Investigator(s)

PI Affiliation

Additional Trial Information

Status
In development
Start date
2025-06-16
End date
2025-06-29
Secondary IDs
Prior work
This trial is based on or builds upon one or more prior RCTs.
Abstract
We will estimate the prevalence of child labor and illegal chemical pesticide use among farming households in Jalal-Abad, Kyrgyz Republic, using a list experiment. Due to respondents' limited familiarity with online surveys and logistical constraints, the survey will be conducted by phone or in person. Respondents will be randomly assigned to each mode to assess whether survey mode affects disclosure. The design aims to obtain more reliable estimates of sensitive behaviors that are often hidden or underreported in standard surveys.
External Link(s)

Registration Citation

Citation
Kajishita, Yoshinari and Renat Tokbaev. 2025. "Child Labor and Illegal Chemical Pesticide Use in Jalal-Abad, Kyrgyzstan: A List Experiment with Randomized Survey Modes." AEA RCT Registry. June 16. https://doi.org/10.1257/rct.16102-1.0
Sponsors & Partners

Sponsors

Experimental Details

Interventions

Intervention(s)
Intervention (Hidden)
Intervention Start Date
2025-06-16
Intervention End Date
2025-06-29

Primary Outcomes

Primary Outcomes (end points)
Each respondent is randomly assigned to either a control group (with 4 non-sensitive items) or a treatment group (with the same 4 items plus 1 sensitive item).
Primary Outcomes (explanation)
Each respondent is independently and randomly assigned to a treatment or control group for two separate list experiments: one on illegal pesticide use and another on child labor within the farming household. Each list experiment consists of a control list (4 neutral items) and a treatment list (the same 4 items plus 1 sensitive item).

Our goal is to estimate the difference in the mean number of items reported between treatment and control groups in each list experiment. This allows us to estimate the prevalence of each sensitive behavior while reducing social desirability bias in responses.

Secondary Outcomes

Secondary Outcomes (end points)
Direct-question responses to each sensitive item (Illegal pesticide use; Child labor) among control-group respondents, recorded as Yes / No / I’m not sure.
Secondary Outcomes (explanation)
After each list experiment, control-group respondents answer the sensitive question directly and choose one of three categories: Yes / No / I’m not sure. The “I’m not sure” option (i) captures genuine uncertainty and (ii) reduces non-response or drop-outs.

Experimental Design

Experimental Design
In collaboration with the Jalal-Abad regional office of the Ministry of Water Resources, Agriculture and Processing Industry of the Kyrgyz Republic, we obtained a list of 1,016 farming households (HHs) in Jalal-Abad. A two-week randomized survey experiment will be conducted with three treatments:

- Treatment 1: Survey mode (Phone vs. In-person, where In-person is the control)
- Treatment 2: Sensitive questions about child labor use (via list experiment)
- Treatment 3: Sensitive questions about illegal chemical pesticide use (via list experiment)

In-person surveys are planned to be conducted in the morning and early afternoon, while phone surveys are scheduled for after 3 PM; however, actual times may vary depending on field conditions.

Treatments 2 and 3 will be randomized independently; however, the order of the two list experiments will not be randomized in order to avoid confusion and reduce the risk of implementation errors among local interviewers, given the complexity of multiple overlapping randomizations.

For phone surveys, interviewers (2 male, 1 female) are randomly assigned to reduce interviewer-related bias, and call order is randomized to reduce timing-related bias. Re-calls are also randomized. Data collection will take place during the experiment period (June 16–29, 2025), as much as possible within logistical constraints.

Note: Households in the in-person survey will be selected purposively (not randomly), based on feasibility and input from local collaborators. As a result, comparisons between the phone and in-person groups may be subject to selection bias and will not allow us to draw conclusions about causality.
Experimental Design Details
Randomization Method
Randomization was conducted using computer-generated assignments in Excel and included the following elements:
- Survey mode assignment (Phone vs In-person)
- Treatment assignment for the child labor list experiment
- Treatment assignment for the illegal pesticide use list experiment
- Interviewer assignment (2 male, 1 female)
- Call order for the phone survey
Randomization Unit
Farming households (HHs) in Jalal-Abad, Kyrgyz Republic
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
In-person surveys are clustered by village or cooperative units, selected based on feasibility and input from local collaborators. These clusters were not randomly assigned and were chosen purposively, which may limit the ability to estimate causal effects when comparing in-person and phone survey responses. Phone surveys are not clustered.
Sample size: planned number of observations
The target sample is 1,016 farming HHs (1 respondent per HH). The final number of observations will depend on interviewer capacity during the survey week, aiming to reach up to 1,016.
Sample size (or number of clusters) by treatment arms
Treatment 1 (Survey Mode):
- Phone: 716HHs
- In-person (Control): 300HHs (subject to local adjustments based on feasibility)

- Note: Households in the in-person survey will be selected purposively (not randomly), based on feasibility and input from local collaborators. As a result, comparisons between the phone and in-person groups may be subject to selection bias and will not allow us to draw conclusions about causality.

Treatment 2 (Illegal Pesticide List Experiment):
- Phone: Treatment 343HHs, Control 373HHs
- In-person: Treatment 147HHs, Control 153HHs

Treatment 3 (Child Labor List Experiment):
- Phone: Treatment 335HHs, Control 381HHs
- In-person: Treatment 157HHs, Control 143HHs
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB

Institutional Review Boards (IRBs)

IRB Name
The Research Ethics Review Board, Graduate School of Human and Social Sciences of Hiroshima University
IRB Approval Date
2025-06-03
IRB Approval Number
HR-LPES-002942

Post-Trial

Post Trial Information

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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