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The problem
Intervention: Child-focused early childhood education and care (ECEC) interventions providing direct learning support and nurturing care through centre- or home-based services
Who it was tested with: Children in the year or two before school entry, younger children, and disadvantaged children across 29 countries.
Experience from people who deliver programmes: stories, case studies and lessons learned. Valuable for understanding how and why, and for spotting what to test next, but not a measure of effect.
"The 35 child-focused interventions in this review (of a total of 109 studies; see further details under background) occurred in 29 countries in five regions... Twenty-seven of the 35 interventions had positive effects on learning." This is a systematic review synthesizing evidence across multiple studies and contexts, meeting criteria for experimental-tier evidence through aggregation of diverse research designs.
The excerpt does not specify the effect sizes, measurement instruments used, or duration of follow-up. Heterogeneity across 35 different interventions means specific mechanisms of effectiveness cannot be determined from this summary.
Across countries and designs
1 study · 4 countries
