Stanford-Binet mental age correlations with achievement rise with grade level, while verbal group test correlations stay about the same¶
Claim · All claims
Evidence · 1 study · associationalr1·q3
Currency · newest study 1923 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
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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 i? Correlations of achievement with mental age are highest in the upper grades, but the article finds no good reason in its data to account for the increase. → Arthur I. Gates 1923
Evidence¶
Arthur I. Gates 1923¶
Arthur I. Gates. (1923). The Correlations of Achievement in School Subjects with Intelligence Tests and Other Variables (Concluded). The Journal of Educational Psychology. https://doi.org/10.1037/h0066477
q3 · i? · associational · r1
Grade-by-grade comparison of achievement correlations with Stanford MA and verbal group tests (Tables X-XII). The article reports "the highest grades show the highest coefficients" for MA, while group test correlations are similar across grades; no effect size is printed for the rise itself.
"In case of the correlations of achievements with MA, the highest grades show the highest coefficients, as was pointed out in the preceding section."
Discussion¶
Related Claims¶
- Adding the verbal group test to Stanford MA raises the multiple correlation with achievement from 0.54 to 0.605 — related
- Stanford-Binet mental age correlations with reading rise from grade III to grade VI — a narrower finding that bears on this claim
- Correlation magnitude rises with the standard deviation of mental age of the group, so cross-group comparisons of the two traits are spurious — related
- With verbalness equal, longer tests correlate more highly with achievement, with a partial correlation of 0.21 for time — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
stanford-ma-achievement-correlation-rises-with-grade |
title |
Stanford-Binet mental age correlations with achievement rise with grade level, while verbal group test correlations stay about the same |
description |
Stanford-Binet mental age correlations with achievement rise with grade level, while verbal group test correlations stay about the same |
status |
review |
evidence_strength |
weak |
newest_evidence |
1923 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — arthur-i-gates-1923 |
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