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The relationship between intelligence and global adaptive functioning in young people with or without neurodevelopmental disorders

åsberg Johnels, Jakob ; Yngvesson, Paul ; Billstedt, Eva ; Gillberg, Christopher ; Råstam, Maria LU orcid ; Gustafsson, Peik LU orcid ; Selinus, Eva Norén ; Lichtenstein, Paul ; Hellner, Clara and Anckarsäter, Henrik LU , et al. (2021) In Psychiatry Research 303.
Abstract

Previous studies have shown an association between IQ and adaptive global functioning, i.e. how well a person is functioning in different domains of life. However, it is unclear to what extent such an association applies in children with neurodevelopmental disorders (NDDs). The study group consisted of 550 population-screened children assessed with the K-SADS, WISC-IV, and the C-GAS. Approximately half of the sample had been diagnosed with one or several NDDs (ADHD, autism, language disorder and tic disorder). A factorial ANOVA with IQ level and the presence of NDD was conducted, with C-GAS score as the dependent variable. Results revealed a significant interaction effect between IQ-group and NDD-status. In the non-NDD group (49%... (More)

Previous studies have shown an association between IQ and adaptive global functioning, i.e. how well a person is functioning in different domains of life. However, it is unclear to what extent such an association applies in children with neurodevelopmental disorders (NDDs). The study group consisted of 550 population-screened children assessed with the K-SADS, WISC-IV, and the C-GAS. Approximately half of the sample had been diagnosed with one or several NDDs (ADHD, autism, language disorder and tic disorder). A factorial ANOVA with IQ level and the presence of NDD was conducted, with C-GAS score as the dependent variable. Results revealed a significant interaction effect between IQ-group and NDD-status. In the non-NDD group (49% girls), higher IQ scores were clearly linked with better global adaptive functioning. Among children with NDDs (35% girls), however, higher IQ scores were not clearly associated with better functioning. Thus, the association between IQ and adaptive functioning were found to differ depending on the presence of NDD. These results have implications for the interpretation of IQ test results in neurodevelopmental assessments and point towards the importance of providing support based on an assessment of needs and functioning rather than scores from IQ tests.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
adaptive functioning, ADHD, Autism, full scale IQ, Neurodevelopmental disorder, tic disorder
in
Psychiatry Research
volume
303
article number
114076
publisher
Elsevier
external identifiers
  • scopus:85109426832
  • pmid:34247062
ISSN
0165-1781
DOI
10.1016/j.psychres.2021.114076
language
English
LU publication?
yes
additional info
Funding Information: The CATSS/DOGSS project is supported by the Swedish Council for Working Life and Social Research, the Swedish Research Council, Systembolaget, the National Board of Forensic Medicine, the Swedish Prison and Probation Service, the Bank of Sweden Tercentenary Foundation and the Söderström-Königska Foundation.
id
2ba3da2c-0f25-4955-b6b9-f1417a6254f8
date added to LUP
2021-08-17 13:02:30
date last changed
2024-12-15 10:20:58
@article{2ba3da2c-0f25-4955-b6b9-f1417a6254f8,
  abstract     = {{<p>Previous studies have shown an association between IQ and adaptive global functioning, i.e. how well a person is functioning in different domains of life. However, it is unclear to what extent such an association applies in children with neurodevelopmental disorders (NDDs). The study group consisted of 550 population-screened children assessed with the K-SADS, WISC-IV, and the C-GAS. Approximately half of the sample had been diagnosed with one or several NDDs (ADHD, autism, language disorder and tic disorder). A factorial ANOVA with IQ level and the presence of NDD was conducted, with C-GAS score as the dependent variable. Results revealed a significant interaction effect between IQ-group and NDD-status. In the non-NDD group (49% girls), higher IQ scores were clearly linked with better global adaptive functioning. Among children with NDDs (35% girls), however, higher IQ scores were not clearly associated with better functioning. Thus, the association between IQ and adaptive functioning were found to differ depending on the presence of NDD. These results have implications for the interpretation of IQ test results in neurodevelopmental assessments and point towards the importance of providing support based on an assessment of needs and functioning rather than scores from IQ tests.</p>}},
  author       = {{åsberg Johnels, Jakob and Yngvesson, Paul and Billstedt, Eva and Gillberg, Christopher and Råstam, Maria and Gustafsson, Peik and Selinus, Eva Norén and Lichtenstein, Paul and Hellner, Clara and Anckarsäter, Henrik and Lundström, Sebastian and Halldner, Linda}},
  issn         = {{0165-1781}},
  keywords     = {{adaptive functioning; ADHD; Autism; full scale IQ; Neurodevelopmental disorder; tic disorder}},
  language     = {{eng}},
  month        = {{09}},
  publisher    = {{Elsevier}},
  series       = {{Psychiatry Research}},
  title        = {{The relationship between intelligence and global adaptive functioning in young people with or without neurodevelopmental disorders}},
  url          = {{http://dx.doi.org/10.1016/j.psychres.2021.114076}},
  doi          = {{10.1016/j.psychres.2021.114076}},
  volume       = {{303}},
  year         = {{2021}},
}