Individual children's memory span scores vary considerably between two testings five weeks apart¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 1918 · 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? Of 192 fifth-grade children tested on two days separated by five weeks, 68 had the same Consecutive Series score, 100 differed by one, and 20 differed by two. → Mitchell 1918
Evidence¶
Mitchell 1918¶
Mitchell, David. (1918). Variability in Memory Span. The Journal of Educational Psychology. https://www.google.com/search?q=%22Variability+in+Memory+Span%22+Mitchell+1918
q3 · i? · associational · r2
Two-occasion test-retest study of 192 fifth-grade children given a digit memory span test on two days separated by exactly five weeks. "68 children had the same score on the two trials" under Consecutive Series scoring, and "One hundred children scored one more in one trial than they did in the other."
"It shows that 68 children had the same score on the two trials. One hundred children scored one more in one trial than they did in the other."
Discussion¶
Related Claims¶
- Lengthening the interval between dictated digits markedly lowered children's memory span scores on one testing day — related
- Group average memory span scores remain nearly identical across days while individual scores vary considerably — possibly the same claim (merge candidate)
- Test-retest correlations of memory span are low, questioning the validity of a single memory span test — related
- Mental index ratings on the group test showed close correspondence over a two-year interval (r = .72, rank correlation .77) among 46 retested children — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
memory-span-individual-scores-vary-five-weeks |
title |
Individual children's memory span scores vary considerably between two testings five weeks apart |
description |
Individual children's memory span scores vary considerably between two testings five weeks apart |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1918 |
generated |
by process:wiki-ingest on 2026-10-23 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — mitchell-1918 |
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