Substantial unexplained heterogeneity characterises short-term effects of targeted K-6 interventions¶
Claim · All claims
Evidence · 1 study · quant-synthesisr3·q4
Currency · newest study 2021 · 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.
q4 i? All measures indicated substantial heterogeneity across short-term effect sizes, and heterogeneity remained statistically significant even within categories of instructional methods. → Dietrichson 2021
Evidence¶
Dietrichson 2021¶
Dietrichson, J., Filges, T., Seerup, J. K., Klokker, R. H., Viinholt, B. C. A., Bøg, M., & Eiberg, M. (2021). Targeted school‐based interventions for improving reading and mathematics for students with or at risk of academic difficulties in Grades K‐6: A systematic review. Campbell Systematic Reviews. https://doi.org/10.1002/cl2.1152
q4 · i? · quant-synthesis · r3
Heterogeneity assessment across the pooled short-term effect sizes in the review's random-effects meta-analysis; the review reports significant heterogeneity also within instructional-method categories, with no effect size printed for heterogeneity.
"All measures indicated substantial heterogeneity across short‐term effect sizes."
Discussion¶
Related Claims¶
- Small group instruction is associated with significantly larger effect sizes than CAI and incentive components in targeted secondary interventions — related
- SEL can be improved by both short-term targeted interventions and longer-term strategies to improve school contextual factors — related
- Effects of adolescent word-reading interventions are substantially heterogeneous between studies — related
- Targeted school-based interventions have positive short-term effects on standardised reading and mathematics tests for K-6 students with or at risk of academic difficulties — a broader claim this one bears on
- Effects of AI literacy interventions vary considerably across contexts, with most variance between studies (71.361%) and a wide prediction interval — related
- Self-management intervention configurations show strong mean effect sizes but substantial effect size heterogeneity in single-case research — related
- Meta-analytic path analysis supports model hypotheses but shows substantial unexplained heterogeneity across studies — related
- Effect sizes vary widely between studies and especially between comparisons within studies — related
- Effect sizes across included studies show high heterogeneity (all I² above 75%) — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
substantial-heterogeneity-short-term-effects |
title |
Substantial unexplained heterogeneity characterises short-term effects of targeted K-6 interventions |
description |
Substantial unexplained heterogeneity characterises short-term effects of targeted K-6 interventions |
status |
review |
evidence_strength |
strong |
newest_evidence |
2021 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — dietrichson-2021 |
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