Cited by 159Attention Deficit Hyperactivity DisorderReading and Literacy DevelopmentDevelopmental and Educational Neuropsychology

The DOI matches its Crossref record; 41 of the 42 references it cites were found in a registry or an index; none of the 16 sources its claims cite is checked for support yet.

Time perception, phonological skills and executive function in children with dyslexia and/or ADHD symptoms

Open access
Gooch, Debbie, Snowling, Margaret, Hulme, Charles·2011·Journal of Child Psychology and Psychiatry

Abstract

Background: Deficits in time perception (the ability to judge the duration of time intervals) have been found in children with both attention‐deficit/hyperactivity disorder (ADHD) and dyslexia. This paper investigates time perception, phonological skills and executive functions in children with dyslexia and/or ADHD symptoms (AS). Method: Children with dyslexia‐only ( n = 17), AS‐only ( n = 17), comorbid dyslexia+AS ( n = 25), and typically developing controls ( n = 42), matched for age and non‐verbal ability, were assessed on measures of phonological skills, executive function and time perception (duration discrimination and time reproduction). Results: Children with dyslexia were impaired on measures of phonological skill and duration discrimination compared to children without dyslexia (though problems on duration discrimination appeared to be attributable to mild symptoms of inattention in this group). In contrast, children with AS exhibited impairments on measures of both time perception and executive function compared to children without AS. Children with dyslexia+AS showed an additive combination of the deficits associated with dyslexia‐only and AS‐only. Conclusions: Dyslexia and AS appear to be associated with distinct patterns of cognitive deficit, which are present in combination in children with dyslexia+AS.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

Children with dyslexia and/or ADHD symptoms (AS) showed distinct cognitive profiles: dyslexia was linked to phonological deficits, while AS was linked to executive-function and time-perception deficits. Comorbid dyslexia+AS showed an additive combination of both profiles rather than more severe or unique deficits.

Key findings

  • Dyslexia was associated with poorer phonological skills: significant main effects on phoneme deletion (F = 9.11, p < .01, ηp² = .09), nonword repetition (F = 9.15, p < .01, ηp² = .09), phonemic decoding (F = 32.62, p < .01, ηp² = .26), and digit recall (F = 5.26, p < .05, ηp² = .05).
  • AS was associated with executive-function/attention weaknesses: significant main effects on response variability (SDRT: F = 9.37, p < .01, ηp² = .10), listening recall (F = 4.72, p < .05, ηp² = .05), block recall (F = 3.95, p < .05, ηp² = .04), and sustained attention (Score!: F = 8.52, p < .01, ηp² = .09).
  • Time perception was impaired in both conditions: duration discrimination showed significant main effects of dyslexia (F = 5.10, p < .05, ηp² = .05) and AS (F = 4.00, p < .05, ηp² = .04); time reproduction error showed a significant AS main effect (F = 6.38, p < .05, ηp² = .07).
  • In a regression predicting duration discrimination thresholds (n = 98), inattention was the only unique predictor (unique R² = .05, p < .05); hyperactivity/impulsivity and literacy difficulty did not predict additional unique variance (R² = .00 and .01), with overall R² = .11.

Methods

  • Four groups of children aged 5.58–14.75 years (mean = 10.23, SD = 2.24) participated: dyslexia-only (n = 17), AS-only (n = 17), dyslexia+AS (n = 25), and typically developing controls (n = 42), matched for age and non-verbal ability.
  • Children completed measures of phonological skills (phoneme deletion, CNRep, phonemic decoding, digit recall), executive function (SSRT task, listening recall, block recall, Score!), and time perception (duration discrimination and time reproduction).
  • Analyses used 2 × 2 (dyslexia ± × AS ±) ANOVAs, planned comparisons, mixed ANOVA for time reproduction, and a simultaneous regression predicting duration discrimination from inattention, hyperactivity, and literacy difficulty.

Limitations

  • Stated in the paper: the lack of a diagnostic assessment of ADHD, including evidence of persistence and impairment, may restrict generalisability to other ADHD samples.
  • Stated in the paper: the study included just one measure of visuo-spatial memory (Block Recall), and other more attentionally demanding visuo-spatial memory tasks were not included.
  • Evident from the text: the AS group combined children with a prior clinical ADHD diagnosis (n = 15) and children recruited on parent/teacher concerns without a clinical diagnosis (n = 27); parent and teacher ratings were not available for all children, and two hyperactive/impulsive-only children were excluded from analyses.

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Integrity signals

Registry

Crossref · 10.1111/j.1469-7610.2010.02312.x

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

9 tests recomputed · 0 with the reported and recomputed p on opposite sides of .05

Verification

Claims the paper makes

36 Own result · 15 Own method · 13 Own interpretation · 12 Not checked yet · 1 No basis given

Verify all 16 references — free account

Show all 55 claims

  • It may state two separate claims as one. 14
  • Probably not a substantial claim. 9
22 of 22
  • The paper relies on this without support.

    The children classified as having ADHD symptoms (AS) based on rating scales have ADHD as intended, despite the lack of a diagnostic assessment.

    “The number of inattentive and hyperactive/impulsive symptoms associated with the child’s highest overall ADHD rating was used as a measure of AS”
    “the lack of a diagnostic assessment of ADHD, which includes evidence of persistence and impairment, is a limitation in this study”
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Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Statistics that don’t add up

Each reported p-value recomputed from its test statistic and degrees of freedom.

1 of 1

Statistics recomputed

Every reported test result, recomputed from its test statistic and degrees of freedom. A result shows as not adding up only once an independent check has confirmed it.

  • Doesn’t add upt(15) = 2.82reported p < .01 · recomputed p = .013

    “t (15) = 2.82, p < .01”

  • Consistentt(39) = 2.39reported p < .05 · recomputed p = .022

    “t (39) = 2.39, p < .05”

  • Consistentt(40) = 1.89reported p = .07 · recomputed p = .066

    “t (40) = 1.89, p = .07”

  • Consistentt(40) = 1.63reported p = .11 · recomputed p = .111

    “t (40) = 1.63, p = .11”

  • Consistentt(40) = 2.03reported p < .05 · recomputed p = .049

    “t (40) = 2.03, p < .05”

  • Consistentt(16) = 3.7reported p < .01 · recomputed p = .002

    “t (16) = 3.70, p < .01”

  • Consistentt(40) = 0.43reported p = .67 · recomputed p = .670

    “t (40) = .43, p = .67”

  • ConsistentF(2.86, 254.45) = 39.78reported p < .01 · recomputed p < .001

    “F (2.86, 254.45) = 39.78, p < .01”

  • Consistentt(40) = 1.47reported p = .15 · recomputed p = .149

    “t (40) = 1.47, p = .15”

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Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

4 of 4

Citations

Cites

Research works printed but not linked: 4

  1. Elliott C.D., 1996, British Ability Scales II (BAS II)
  2. Gathercole S.E., 1996, Children’s test of Nonword Repetition (CNRep)
  3. Manly T., 1999, The Test of Everyday Attention for Children (TEA‐Ch)
  4. Pickering S.J., 2001, Working Memory Test Battery for Children (WMTB‐C)

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Metadata

Authors
Gooch, D., Snowling, M., & Hulme, C.
Affiliations
University of York (GB)
Venue
Journal of Child Psychology and Psychiatry
Publisher
Wiley
Published
2010-09-23
Volume
52
Issue
2
Pages
195-203
ISSN
  • 0021-9630 (ISSN-L)
  • 1469-7610
OpenAlex
W2114204835
Cited by
157
References
42
Citations by year
2026: 5 · 2025: 5 · 2024: 7 · 2023: 11 · 2022: 10 · 2021: 9 · 2020: 9 · 2019: 15 · 2018: 8 · 2017: 8 · 2016: 17 · 2015: 16 · 2014: 10 · 2013: 13 · 2012: 10
FWCI
5.89
Type
journal article
Language
en
Open access
Locations
  • Journal of Child Psychology and Psychiatry (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
  • Research Bank (Australian Catholic University) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
Wellcome Trust (082036)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
  • Social Sciences › Psychology › Developmental and Educational Psychology › Reading and Literacy Development
  • Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Developmental and Educational Neuropsychology
Keywords
time perception, duration discrimination, time reproduction, phonological skills, executive function, dyslexia, attention deficit hyperactivity disorder, comorbidities, inattention, children
MeSH terms
Adolescent, Attention Deficit Disorder with Hyperactivity, Child, Dyslexia, Female, Humans, Male, Neuropsychological Tests, Phonetics, Reading, Time Perception, Verbal Learning, Comorbidity, Case-Control Studies, Executive Function

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