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1 Esther Parigger' 140707'

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Executive functions in SLI with(out) ADHD symptoms ... E: e.m.parigger_at_uva.nl. W: http://home.medewerker.uva.nl/e.m.parigger. T: 0031-20-5253811 ... – PowerPoint PPT presentation

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Title: 1 Esther Parigger' 140707'


1
Exploring the overlap
between children with SLI and children
with ADHD
Esther Parigger EUCLDIS 2007
2
Overview
  • Overlap between SLI and ADHD
  • Executive functions in SLI with(out) ADHD
    symptoms
  • Semantics/pragmatics in SLI with(out) ADHD
    symptoms
  • Conclusion and discussion

3
SLI
  • Stark and Tallal, 1981
  • Bishop, 1994

Impaired hearing Emotional and behavioral
problems PIQ lt 85 Neurological deficits/
lesions Speech motor skill deficiencies Low
reading age
  • Diagnosis
  • ?Exclusion
  • ?Severity

LA Receptive lt MAP/CA (6 mo.) LA Expressive lt
MAP/CA (12 mo.) LA Overall lt MAP/CA (6 mo.)
Diagnosed on the basis of exclusion!
No behavioral problems allowed!
4
ADHD
  • APA, 2000

Language items are included in the symptom list!
Diagnosed on the basis of clinical evaluation!
  • Diagnosis
  • ?Symptoms (division in subtypes)
  • -present before 7 years of age
  • -present in 2 or more settings
  • -significant impairment in functioning
  • -not accounted for by another disorder

Symptoms of inattention Symptoms of
hyperactivity/impulsivity
Predominantly inattentive subtype Predominantly
hyperactive/impulsive subtype Combined subtype
5
SLI and ADHD
  • Not just two different worlds..
  • ? overlapping symptoms

6
SLI and behavioural problems
  • Botting, 2006 (poster)
  • 23 of 200 children with (S)LI
  • scored in the atypical range of
  • the ADHD scale of the SDQ
  • These children performed worse
  • in expressive language tasks with
  • semantic content
  • ? underlying problems with inhibition?

Expected2-6!
7
ADHD and language problems
Parigger and Baker, 2005 Parigger, in prep. (a)
  • Subtle problems in language comprehension
  • More robust problems in language production
  • ? mainly pragmatics
  • E.g. percentage of worded plot elements in
    Frog-stories
  • -effect of diagnosis ADHDltTD
  • -effect of age 7lt8lt9

8
Possible explanation
Tannock and Schachar, 1996 147
  • Executive Dysfunction Theory
  • We theorize that the core behavioural
    symptoms of ADHD () and the pragmatic
    difficulties that these children exhibit ()
    are related to deficits in executive function
    (i.e. higher-order cognitive processes).

9
This study
Parigger, in prep (b)
  • Is it possible, within a SLI group, to
    distinguish a group of children with ADHD
    symptoms and a group of children without ADHD
    symptoms?
  • If so, is it possible to differentiate these
    groups with respect to
  • 1 Executive functions?
  • 2 Semantics/pragmatics?

10
Subjects
  • 15 children diagnosed with SLI
  • -13 boys, 2 girls
  • -mean age 82

11
Groups
  • Dutch checklist for behavioural problems VvGK
  • 33 of 15 children with SLI
  • scored in the (sub)clinical range of
  • the inattention and/or hyperactivity
  • scales of the VvGK

Expected2-6!
12
1a Inhibition
  • CANTAB Stop Signal Task


ANOVA SLIADHD SLI-ADHD
Comparison with typically developing norm group
not yet possible
13
1b Attention
  • CANTAB Rapid Visual Information Processing

ANOVA SLIADHD SLI-ADHD
Norm group comparison SLI-ADHD TD
14
1c Working memory
  • CANTAB Spatial Working Memory

ANOVA SLIADHD SLI-ADHD
Norm group comparison SLI-ADHD TD
15
1d Shifting
  • CANTAB Intra/extradimensional Shift

ANOVA SLIADHD SLI-ADHD
Norm group comparison SLI-ADHD TD
16
Summary executive functions
  • No differentiation between SLI group with and SLI
    group without ADHD symptoms on measures of
  • -inhibition
  • -attention
  • -working memory
  • -shifting

17
2a Semantics
  • Dutch childrens communication checklist
    CCC-2-NL


ANOVA SLIADHD SLI-ADHD
Norm group comparison SLIADHD lt TD SLI-ADHD lt TD
18
2b Pragmatics
  • Dutch childrens communication checklist
    CCC-2-NL


ANOVA SLIADHD lt SLI-ADHD
Norm group comparison SLIADHD lt TD SLI-ADHD TD
19
2c Coherence
  • Dutch childrens communication checklist
    CCC-2-NL


ANOVA SLIADHD lt SLI-ADHD
Norm group comparison SLIADHD lt TD SLI-ADHD lt TD
20
Summary semantics/pragmatics
  • Differentiation between SLI group with and SLI
    group without ADHD symptoms on
  • -pragmatic composite
  • -coherence subscale

21
Conclusion
  • It is possible, within a SLI group, to
    distinguish a group of children with ADHD
    symptoms and a group of children without ADHD
    symptoms.
  • These groups dont differ with respect to
    executive functioning. But they do differ with
    respect to pragmatics and coherence.

22
Discussion
  • An overlapping subgroup?

ADHD
LI SLI (prag.)
23
Further research
Parigger, in prep (c)
  • Main study
  • Comparison of language profiles and cognitive
    profiles of children with ADHD, children with
    SLI, and normally developing children

24
Information
  • E e.m.parigger_at_uva.nl
  • W http//home.medewerker.uva.nl/e.m.parigger
  • T 0031-20-5253811

Ill upload a hand-out!
25
Theory of constructive operators (TCO)
  • Im-Bolter, 2006
  • Pascual-Leone, 1970, 1987

M- capacity
Recentration (updating)
Language competence
Interruption (inhibition)
Decentration (shifting)
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