TY - JOUR
T1 - The relationship between intelligence and global adaptive functioning in young people with or without neurodevelopmental disorders
AU - åsberg Johnels, Jakob
AU - Yngvesson, Paul
AU - Billstedt, Eva
AU - Gillberg, Christopher
AU - Råstam, Maria
AU - Gustafsson, Peik
AU - Selinus, Eva Norén
AU - Lichtenstein, Paul
AU - Hellner, Clara
AU - Anckarsäter, Henrik
AU - Lundström, Sebastian
AU - Halldner, Linda
N1 - 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.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - 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.
AB - 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.
KW - adaptive functioning
KW - ADHD
KW - Autism
KW - full scale IQ
KW - Neurodevelopmental disorder
KW - tic disorder
UR - http://www.scopus.com/inward/record.url?scp=85109426832&partnerID=8YFLogxK
U2 - 10.1016/j.psychres.2021.114076
DO - 10.1016/j.psychres.2021.114076
M3 - Article
C2 - 34247062
AN - SCOPUS:85109426832
SN - 0165-1781
VL - 303
JO - Psychiatry Research
JF - Psychiatry Research
M1 - 114076
ER -