Memory recall declines over the 12-hour retention interval between encoding and retrieval¶
Claim · All claims
Evidence · 1 study · associationalr2·q3·i3large
Currency · newest study 2016 · 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 i3 Paired-associate recall was poorer at session 2 than session 1, a large within-subject decline (d = 1.36). → Pontifex 2016
Evidence¶
Pontifex 2016¶
Pontifex, M. B., Gwizdala, K. L., Parks, A. C., Pfeiffer, K. A. & Fenn, K. M. (2016). The Association between Physical Activity During the Day and Long-Term Memory Stability. Scientific Reports 6, 38148. https://doi.org/10.1038/srep38148
q3 · i3 · associational · r2
Within-sample paired t-test across the 92 participants comparing cued recall at the two sessions. Recall "decrease[d] over time", from 49.4 ± 6.8 to 47.0 ± 7.8 words, t(91) = 7.2, p < 0.001, d = 1.36.
"Memory recall was observed to decrease over time, with poorer performance observed at session 2 (47.0 ± 7.8 words) relative to session 1 (49.4 ± 6.8 words; t (91) = 7.2, p < 0.001, d = 1.36)"
Discussion¶
Related Claims¶
- Greater aerobic fitness is associated with more stable long-term memory retention over 12 hours in young adults — related
- Spending more time sedentary 1 to 2 hours after encoding is associated with better long-term memory retention, implying physical activity in that window is detrimental — related
- Total percentage of time spent sedentary or in moderate-to-vigorous physical activity during the day is unrelated to long-term memory retention in young adults — related
- Physical activity in the hour before memory retrieval is associated with superior memory retention, while sedentary time in that window is negatively associated — related
- A combined model of demographics, aerobic fitness, and the two critical activity windows accounts for over 30% of variance in long-term memory retention — related
- Longer retention intervals between pre- and post-test weaken the effect of mental simulation — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
memory-declines-over-12-hour-interval |
title |
Memory recall declines over the 12-hour retention interval between encoding and retrieval |
description |
Memory recall declines over the 12-hour retention interval between encoding and retrieval |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2016 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — pontifex-2016 |
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