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Interactive Phone Calls to Improve Reading Fluency
Last registered on June 12, 2021

Pre-Trial

Trial Information
General Information
Title
Interactive Phone Calls to Improve Reading Fluency
RCT ID
AEARCTR-0007663
Initial registration date
May 11, 2021
Last updated
June 12, 2021 6:49 AM EDT
Location(s)

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Primary Investigator
Affiliation
World Bank
Other Primary Investigator(s)
Additional Trial Information
Status
In development
Start date
2021-05-11
End date
2021-07-31
Secondary IDs
Abstract
We conduct an adaptive experiment to select one out of six treatment arms of biweekly phone calls to parents that deliver reading exercises for first graders. The experiment is carried out in two waves - start to midterm, and midterm to endterm - during term 3 of the first grade in a sample of 108 private primary schools in Kenya. The method uses Bayesian econometrics to estimate average treatment effects and exploration sampling (Kasy and Sautmann, 2021) to assign parents to treatment arms in each wave. The objective is to identify the treatment arm with the highest average "correct words per minute" (cwpm) score.
External Link(s)
Registration Citation
Citation
Sautmann, Anja. 2021. "Interactive Phone Calls to Improve Reading Fluency." AEA RCT Registry. June 12. https://doi.org/10.1257/rct.7663-2.0.
Experimental Details
Interventions
Intervention(s)
We carry out 3 methods of leveling reading exercises by students' reading proficiency, and 2 different delivery formats (either instructing parents how to tutor children, or the IVR tutoring the reading exercises directly), for a total of 3x2 = 6 treatment arms.
Intervention Start Date
2021-05-11
Intervention End Date
2021-07-31
Primary Outcomes
Primary Outcomes (end points)
Oral reading fluency, parental engagement.
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We carry out an adaptive experiment with 6 treatment arms and a control group to identify the treatment arm that in expectation leads to the greatest improvements in reading fluency, through engaging parents in reading regularly with their children at home. In the first wave of the experiment, student IDs are randomly assigned to each arm and the control; in the second wave, we calculate the probability that each treatment arm is optimal using Bayesian estimation and then use Exploration Sampling (Kasy and Sautmann, 2021) to assign the wave-2 sample to these arms.
Experimental Design Details
Not available
Randomization Method
Computer based.
Randomization Unit
Individual student
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
3128 students
Sample size: planned number of observations
3128 students
Sample size (or number of clusters) by treatment arms
Equal assignment to treatment arms in wave 1, tbd in wave 2 based on exploration sampling shares.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
N/A
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

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