Pupils of the same grade show enormous individual differences in initial adding ability and in gain from equal practice¶
Claim · All claims
Evidence · 1 study · causalr1·q2
Currency · newest study 1914 · 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? Within the same grade, initial ability in adding ranges enormously and gains from the same amount of practice also differ greatly between individuals. → H. H. Hahn and E. L. Thorndike 1914
Evidence¶
H. H. Hahn and E. L. Thorndike 1914¶
H. H. Hahn and E. L. Thorndike. (1914). Some Results of Practice in Addition Under School Conditions. The Journal of Educational Psychology, Volume V, Number 2. https://www.google.com/search?q=Hahn+Thorndike+1914+Some+Results+of+Practice+in+Addition+Under+School+Conditions
q2 · i? · causal · r1
Descriptive analysis of individual initial and final scores in Table 1 and distributions in Tables 5 and 6. In the seventh grade the range is from 8 right and 8 wrong to 38 right and 6 wrong; the article states the tables show "the enormous overlapping of the different grades in respect to ability in adding at the start of the experiment."
"The wide range in initial ability of pupils of the same grade who have had approximately the same school training in adding is obvious from inspection of Table 1."
Discussion¶
Related Claims¶
- Equal practice increases rather than reduces initial ability differences in addition within the same grade — related
- Distributed school practice in addition produces large gains, roughly 50 per cent in examples correct, in school pupils as found — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
enormous-individual-differences-addition-ability-and-gain |
title |
Pupils of the same grade show enormous individual differences in initial adding ability and in gain from equal practice |
description |
Pupils of the same grade show enormous individual differences in initial adding ability and in gain from equal practice |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1914 |
generated |
by process:wiki-ingest on 2026-10-23 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — h-h-hahn-and-e-l-thorndike-1914 |
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