Sixty-three per cent of Detroit prevocational pupils have an I.Q. below .70¶
Claim · All claims
Evidence · 1 study · associationalr1·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? In the tested Detroit prevocational population, 63% of pupils rated below I.Q. .70, and only 6.81% rated between I.Q. .80 and .92. → 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 · r1
Intelligence testing of 308 pupils in the seven Detroit prevocational classes with the Stanford Revision of the Binet scale. The article reports that "6.81 per cent, of these cases rate between I. Q. .80 and .92" and that 63% of all pupils have an I.Q. below .70.
"But 6.81 per cent, of these cases rate between I. Q. .80 and .92."
Discussion¶
Related Claims¶
- 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 — related
- Grouping pupils by mental age is not a reliable means of ensuring proper educational treatment — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
detroit-prevocational-63-percent-iq-below-70 |
title |
Sixty-three per cent of Detroit prevocational pupils have an I.Q. below .70 |
description |
Sixty-three per cent of Detroit prevocational pupils have an I.Q. |
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 |
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