A year-long field experiment in Nigerian primary schools tested the impact of interleaved math practice on student learning. The study, conducted by Guthrie Gray-Lobe and published via Harvard Dataverse in March 2026, found short-term performance gains of 0.28 standard deviations but no effect on end-of-year assessments.
Use Cases
- Analyze the correlation between interleaved practice assignment and short-term test scores.
- Compare end-of-year assessment outcomes between treatment and control groups.
- Investigate differential treatment effects using student achievement level as a feature.
- Model the relationship between the duration of the intervention (one year) and learning outcomes.
Strengths
- Based on a year-long field experiment providing longitudinal data.
- Reports a measured effect size of 0.28 standard deviations for short-term gains.
- Includes analysis of heterogeneous treatment effects by student achievement level.
Limitations
- No effect was found on cumulative end-of-year assessments, limiting evidence for long-term impact.
- Specific sample size, row count, and column details are unknown.
- Geographic scope is limited to primary schools in Nigeria.
Provenance
- Source
- Harvard Dataverse, author Guthrie Gray-Lobe.
- Collection Method
- Field experiment in primary schools.
- Time Range
- One academic year.
- Freshness
- Last updated March 2026.
- Geography
- Nigeria.