Claims

Group average memory span scores remain nearly identical across days while individual scores vary considerably

Claim · All claims
Evidence · 1 study · associational r1 · 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? Group averages for memory span are approximately identical from day to day even though individual children's scores fluctuate substantially. → 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 · r1

Comparison of daily group averages across the ten-day testing of 97 seventh-grade children and the two-day testing of 192 fifth graders. The article reports that "Group results are approximately identical from day to day but individual scores vary considerably."

"Group results are approximately identical from day to day but individual scores vary considerably."

Discussion

Page metadata
Field Value
type claim
id group-averages-stable-individuals-vary
title Group average memory span scores remain nearly identical across days while individual scores vary considerably
description Group average memory span scores remain nearly identical across days while individual scores vary considerably
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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