Second-year kindergartners outperform first-year kindergartners on CVS scores with large differences¶
Claim · All claims
Evidence · 1 study · associationalr1·q2·i3large
Currency · newest study 2015 · 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.
q2 i3 K2 children showed better CVS scores than K1 children, with Cohen's d of 1.21 for experiment correct and 1.22 for variable correct scores. → Joep van der Graaf 2015
Evidence¶
Joep van der Graaf 2015¶
Joep van der Graaf, Eliane Segers, Ludo Verhoeven. (2015). Scientific reasoning abilities in kindergarten: dynamic assessment of the control of variables strategy. Instr Sci 43:381–400. https://doi.org/10.1007/s11251-015-9344-y
q2 · i3 · associational · r1
Independent-samples t-tests comparing K1 and K2 children on CVS and nonverbal reasoning scores. K2 children scored higher on both CVS scores with large printed effect sizes (Cohen's d of 1.21 and 1.22); nonverbal reasoning showed a medium effect size (d = .60, p = .049).
"The differences in the K1 versus K2 children's CVS scores were large, as indicated by a Cohen's d of 1.21 for experiment correct scores and a Cohen's d of 1.22 for variable correct scores, while nonverbal rea-soning scores showed a medium effect size"
Discussion¶
Related Claims¶
- CVS use relates positively to age but not to gender in kindergartners
- Dynamic assessment can teach kindergartners the CVS within a single session
- Mokken scale analysis establishes content validity of the ramp task as a unidimensional measure of CVS use
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
k2-outperforms-k1-cvs-scores |
title |
Second-year kindergartners outperform first-year kindergartners on CVS scores with large differences |
description |
Second-year kindergartners outperform first-year kindergartners on CVS scores with large differences |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2015 |
generated |
by process:wiki-ingest on 2026-10-18 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — joep-van-der-graaf-2015 |
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