The 30-week Nuffield Early Language Intervention improved the language skills of children with low language ability, equivalent to about four months of additional progress¶
Claim · All claims
Evidence · 1 study · causalr2·q3·i1small
Currency · newest study 2016 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i1 Children receiving the 30-week version of NELI made the equivalent of about four months of additional progress in language skills compared with untreated controls, an effect unlikely to have occurred by chance. → Sibieta 2016
Evidence¶
Sibieta 2016¶
Sibieta, L., Kotecha, M., & Skipp, A. (2016). Nuffield Early Language Intervention: Evaluation report and executive summary. Education Endowment Foundation. https://educationendowmentfoundation.org.uk/projects/language-for-learning/
q3 · i1 · causal · r2
Randomised controlled trial with child-level randomisation within 34 schools' nurseries; 350 pupils in the final common sample. The summary impact table reports an effect size of "0.27 (0.07; 0.46)" for the 30-week group versus untreated control, estimated as "4 months" of additional progress; the confidence interval excludes zero.
"30-week vs. untreated control 0.27 (0.07; 0.46) 4 months"
Discussion¶
Learner Variables¶
- Oral Language — outcome: instruction changes it
Related Claims¶
- The 20-week version of NELI improved language skills by an estimated two months of progress, though the evidence is less secure than for the 30-week version — related
- Follow-up testing six months after the programmes ended suggested the language impact may have increased over time, but this could not be established with confidence — related
- Staff in participating schools reported improvements in children's spoken language, listening, narrative skills, vocabulary and confidence, attributing them to the small-group format and engaging content — related
- Neither the 30-week nor the 20-week version of NELI showed reliable short-term impact on children's word-level literacy skills — related
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