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The relationship between intelligence and global adaptive functioning in young people with or without
Jakob Åsberg Johnels1, Paul Yngvesson1, Eva Billstedt1
1Gillberg Neuropsychiatry Centre, University of Gothenburg, Gothenburg, Sweden.
Psychiatry Research
|July 11, 2021
Summary
In children with neurodevelopmental disorders (NDDs), higher IQ scores do not necessarily predict better adaptive functioning. This contrasts with typically developing children, highlighting the need for individualized support assessments.
Area of Science:
- Child Psychology
- Neurodevelopmental Disorders
- Cognitive Assessment
Background:
- Previous research indicates a link between IQ and adaptive functioning in the general population.
- The relationship between IQ and adaptive functioning in children with neurodevelopmental disorders (NDDs) remains less understood.
- NDDs encompass conditions like ADHD, autism, language disorder, and tic disorder.
Purpose of the Study:
- To investigate the association between IQ and adaptive global functioning in children with and without NDDs.
- To determine if the presence of NDDs modifies the relationship between IQ and adaptive functioning.
- To inform the interpretation of IQ scores in neurodevelopmental assessments.
Main Methods:
- A study group of 550 population-screened children was assessed.
- Participants were evaluated using the K-SADS, WISC-IV, and C-GAS.
- A factorial ANOVA examined the interaction between IQ level and NDD status on C-GAS scores.
Main Results:
- A significant interaction effect was found between IQ group and NDD status.
- In children without NDDs, higher IQ was associated with better adaptive functioning.
- Among children with NDDs, higher IQ was not clearly linked to improved adaptive functioning.
Conclusions:
- The association between IQ and adaptive functioning differs significantly in the presence of NDDs.
- IQ test results in neurodevelopmental assessments require careful interpretation.
- Support for children with NDDs should prioritize functional needs over IQ scores.
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