Grade-class membership relates to grade distributions, with failing-poor ratios rising sharply across the five lowest-to-highest Alpha classes¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 1920 · 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.
q3 i? The percentage of students with point-hour ratios below 1.00 rises from 25.1% in the top Alpha class to 88.3% in the bottom class, while the percentage at 1.20 or higher falls from 42.7% to 3.3%. → Bridges 1920
Evidence¶
Bridges 1920¶
Bridges, J. W. (1920). The correlation between college grades and the Alpha intelligence tests. The Journal of Educational Psychology, 11(7), 361-369. https://doi.org/10.1037/h0071462
q3 · i? · associational · r2
Percentage distributions in Table II for the five Alpha classes (points 178-212 down to 0-84) show F and P of 25.1, 32.8, 46.6, 66.7, 88.3 and G and M of 42.7, 33.6, 18.3, 5.5, 3.3 across Classes I-V; no effect size is printed, so impact is null.
"The relationship between the intelligence class attained and the point-hour ratio is shown in Table II. The percentage distribution of academic grades for students of each class is given."
Discussion¶
Related Claims¶
- Selected academic groups differ in Alpha distributions, with Phi Beta Kappa electees concentrated in higher classes and probationers lower — related
- Gains in sophomore performance were unequal: about one in five Latino and Black young men were off-track at the end of sophomore year — related
- Student performance declines from freshman to sophomore year, with course failures rising in every subject and attendance declining sharply — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
intelligence-class-gradedistribution |
title |
Grade-class membership relates to grade distributions, with failing-poor ratios rising sharply across the five lowest-to-highest Alpha classes |
description |
Grade-class membership relates to grade distributions, with failing-poor ratios rising sharply across the five lowest-to-highest Alpha classes |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1920 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — bridges-1920 |
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