WMPT accuracy, confidence, Bias Index and Absolute Accuracy Index all change significantly with task difficulty¶
Claim · All claims
Evidence · 1 study (2 entries) · associationalr2·q3·i2medium
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2020: tool and model accuracy changes quickly
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? Accuracy and confidence decreased significantly with WMPT difficulty, while Bias and Absolute Accuracy Indexes increased significantly, per repeated-measures ANOVAs. → Freeman 2017
q3 i2 Accuracy and confidence on the WMPT showed a small but significant positive correlation, r = .259, p < .05. → Freeman 2017 (2)
Evidence¶
Freeman 2017¶
Freeman, Emily E.; Karayanidis, Frini; Chalmers, Kerry A. (2017). Metacognitive monitoring of working memory performance and its relationship to academic achievement in Grade 4 children. Learning and Individual Differences, Vol. 57. http://dx.doi.org/10.1016/j.lindif.2017.06.003
q3 · i? · associational · r2
One-way repeated measures ANOVAs on 73 children's WMPT data across five difficulty levels confirmed significant decreases in accuracy and confidence; the article also reports significant increases in the Bias and Absolute Accuracy Indexes with difficulty.
"One-way repeated measures ANOVAs confirmed that the decreases in both accuracy and confidence with increasing task difficulty were significant, F(3.6, 254) = 81.06, p < .001, ŋ2 = .53 and F(2.6, 186) = 50.34, p < .001, ŋ2 = .42, respectively."
Freeman 2017 (2)¶
Freeman, Emily E.; Karayanidis, Frini; Chalmers, Kerry A. (2017). Metacognitive monitoring of working memory performance and its relationship to academic achievement in Grade 4 children. Learning and Individual Differences, Vol. 57. http://dx.doi.org/10.1016/j.lindif.2017.06.003
q3 · i2 · associational · r2
Pearson correlation on the same sample found a small positive accuracy–confidence association (r = .259), which the authors interpret as the two measures being yoked per trial yet "tapping different constructs".
"There was a small, but significant positive correlation between accuracy and confidence on the WMPT, r = .259, p < .05, suggesting that children who were more accurate on the WMPT were also more confident in their performance."
Discussion¶
Related Claims¶
- Absolute monitoring accuracy showed a mixed, inconsistent group-by-time interaction rather than a stable competitiveness difference — related
- Confidence on the WMPT predicts numeracy but not reading or spelling
- WMPT accuracy is positively correlated with reading, numeracy, spelling and composite achievement scores — related
- Grade 4 children can metacognitively monitor their working memory performance, tending to be over-confident as task difficulty increases — related
- With increasing n-back task difficulty, reaction times increase and accuracy decreases — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
wmpt-measures-vary-with-difficulty |
title |
WMPT accuracy, confidence, Bias Index and Absolute Accuracy Index all change significantly with task difficulty |
description |
WMPT accuracy, confidence, Bias Index and Absolute Accuracy Index all change significantly with task difficulty |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2017 |
recheck_by |
2020 |
generated |
by process:wiki-ingest on 2026-10-16 |
trust |
unverified — no one has confirmed this page's content |
sources |
2 — freeman-2017, freeman-2017-2 |
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