Children with developmental dyslexia show a processing speed impairment relative to controls¶
Claim · All claims
Evidence · 1 study · associationalr2·q3·i2medium
Currency · newest study 2018 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2023: baselines and conditions change
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 i2 The dyslexia group was significantly slower than controls on the computerized coding task measure of processing speed (Cohen's d = 0.60). → Doyle C 2018
Evidence¶
Doyle C 2018¶
Doyle C, Smeaton AF, Roche RAP and Boran L (2018) Inhibition and Updating, but Not Switching, Predict Developmental Dyslexia and Individual Variation in Reading Ability. Front. Psychol. 9:795. https://doi.org/10.3389/fpsyg.2018.00795
q3 · i2 · associational · r2
Case-control ANOVA on the computerized coding task (Wechsler, 2003), scored as trials correctly completed after 30 s, in the dyslexia vs control sample. The article reports "a processing speed impairment" with Cohen's d = 0.60.
"Dyslexia is also associated with a processing speed impairment [F(1, 54) = 4.84, p < 0.05, Cohen's d = 0.60; Figure 2]."
Discussion¶
Related Claims¶
- Adults with developmental dyslexia are slower than controls at speeded digit identification
- Children with developmental dyslexia show a significant updating impairment at the error z-mean composite level, which remains after controlling for processing speed
- Children with developmental dyslexia show a significant inhibition impairment at the error z-mean composite level, which remains after controlling for processing speed — related
- An apparent switching advantage in dyslexia (lower switching reaction-time cost) disappears after controlling for processing speed — related
- Task-level executive function differences in dyslexia on the Phoneme Go No-Go and Picture 2-back tasks are no longer significant after controlling for processing speed — related
- Processing speed is the most impaired Wechsler cognitive domain among youth referred for neuropsychiatric evaluation — related
- Children with DD show slower reaction times than TD children during arithmetic problem solving, with no operation-specific RT effect — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
dyslexia-processing-speed-impairment |
title |
Children with developmental dyslexia show a processing speed impairment relative to controls |
description |
Children with developmental dyslexia show a processing speed impairment relative to controls |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2018 |
recheck_by |
2023 |
generated |
by process:wiki-ingest on 2026-10-16 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — doyle-c-2018 |
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