The Bell Chemistry Test correlates moderately with semester marks and teachers' estimates, and is judged a fairly good measure of class knowledge but unreliable for an individual.¶
Claim · All claims
Evidence · 1 study · associationalr1·q2
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.
q2 i? The author interprets the raw coefficients as showing the test is a fairly good measure of a class's knowledge, but detailed pairings indicate it is unreliable for an individual. → Thomas H. Briggs 1920
Evidence¶
Thomas H. Briggs 1920¶
Thomas H. Briggs. (1920). Results of the Bell Chemistry Test. The Journal of Educational Psychology. https://doi.org/10.1037/h0074597
q2 · i? · associational · r1
The author's interpretation of the Table II correlations in the article's running text: the test measures "a cla6s knowledge of chemistry" fairly well, yet detailed pairings show it is unreliable for judging an individual pupil.
"These raw coefficients may be interpreted as showing that the test is a fairly good measure of a cla6s knowledge of chemistry; but a study of the detailed pairings indicate that it is unreliable for an individual."
Discussion¶
Related Claims¶
- Spelling test scores correlate highly with teachers' year-long marks (average coefficient .69 across grades 3–8) — related
- Peer marks and grades show acceptably high reliability with teachers' marks in most comparison studies, but a substantial minority report low reliability — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
bell-test-fair-class-measure-unreliable-individual |
title |
The Bell Chemistry Test correlates moderately with semester marks and teachers' estimates, and is judged a fairly good measure of class knowledge but unreliable for an individual. |
description |
The Bell Chemistry Test correlates moderately with semester marks and teachers' estimates, and is judged a fairly good measure of class knowledge but unreliable for an individual. |
status |
review |
evidence_strength |
weak |
newest_evidence |
1920 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — thomas-h-briggs-1920 |
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