Relative to mental age, 68% of pupils do arithmetic work comparable to same-mental-age children, 59.8% in language, but only 13.5% in silent reading¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 1915 · 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 i? Of the 308 cases, 68% could do arithmetic work comparable to children of the same mental age, 59.8% in language, and 13.5% in silent reading. → Renshaw 1915
Evidence¶
Renshaw 1915¶
Renshaw, S. (1915). The abilities of pupils in Detroit prevocational classes. The Journal of Educational Psychology. https://www.jstor.org/journal/jeduapsy
q2 · i? · associational · r2
Summary comparison of attainment on the arithmetic, language, and silent reading measures against expectations from mental ages for the 308 tested pupils. The article reports that "68 per cent, can do work in arithmetic comparable to children of the same mental age" with lower percentages in language and silent reading.
"Of the 308 cases 68 per cent, can do work in arithmetic comparable to children of the same mental age; 59.8 per cent, in language, and 13.5 per cent, in silent reading."
Discussion¶
Related Claims¶
- Sixty-three per cent of Detroit prevocational pupils have an I.Q. below .70 — related
- 80% of Detroit prevocational pupils lie below the normal fifth-grade level in arithmetical ability — related
- Grouping pupils by mental age is not a reliable means of ensuring proper educational treatment — a broader claim this one bears on
- 75% of Detroit prevocational pupils rate below the normal third-grade level in language completion — related
- 86% of Detroit prevocational pupils fall below the third-grade level in silent reading — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
detroit-prevocational-attainment-relative-to-mental-age |
title |
Relative to mental age, 68% of pupils do arithmetic work comparable to same-mental-age children, 59.8% in language, but only 13.5% in silent reading |
description |
Relative to mental age, 68% of pupils do arithmetic work comparable to same-mental-age children, 59.8% in language, but only 13.5% in silent reading |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1915 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — renshaw-1915 |
Frontmatter is the page's machine-readable record — see the Schema & Guide.