Do Wechsler intelligence scales predict academic achievement in children with ADHD or autism? A systematic review and meta-analysis

Introduction

 

For parents and educators navigating the world of childhood development, understanding a child’s strengths and weaknesses is paramount. This is especially true for children diagnosed with neurodevelopmental disorders like Attention Deficit/Hyperactivity Disorder (ADHD) and Autism Spectrum Disorder (ASD). When it comes to academic achievement, a common question arises: can intelligence tests predict how well a child with ADHD or ASD will perform in school?

A new research review published in June 2024 in the journal Applied Neuropsychology: Child, offers valuable insights into this topic. The study delves into the potential of Wechsler Intelligence Scales (WISC) as a tool for predicting academic success in children with ADHD and ASD.

Demystifying the Wechsler Intelligence Scales

 

The Wechsler Intelligence Scales (WISC) are a widely used set of standardized tests designed to assess a broad spectrum of cognitive abilities in children. Administered by a qualified professional, the WISC provides a comprehensive picture of a child’s intellectual functioning.

The WISC generates a Full Scale IQ (FSIQ) score, which offers a general measure of cognitive ability. Additionally, the test breaks down performance into subtest scores that tap into specific cognitive domains like verbal comprehension, processing speed, working memory, and visual-spatial reasoning. This detailed breakdown allows for a more nuanced understanding of a child’s cognitive strengths and weaknesses.

Shedding Light on the Link: WISC Scores and Academic Performance

 

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The research employed a systematic review and meta-analysis approach. This involved meticulously searching major databases for relevant studies published between 2000 and 2023. The researchers then employed meta-analysis, a statistical technique that combines data from multiple studies to identify overall trends and strengthen the collective evidence.

Their analysis focused on exploring the potential link between WISC scores and academic achievement in children diagnosed with ADHD or ASD.

A Moderate Positive Correlation Emerges

 

The research revealed a moderately positive correlation between specific WISC scores and academic performance in core subjects like reading, writing, and math for children with ADHD. This means that higher scores on the FSIQ and Processing Speed Index (PSI) subtests of the WISC were associated with better academic performance in these areas.

For children with ASD, the research landscape offered a slightly different picture. The study identified a limited number of existing studies investigating the association between WISC scores and academic achievement in this population. However, the available studies suggested a similar positive correlation, hinting at a potential connection between WISC scores and academic success in children with ASD as well.

WISC Scores: A Piece of the Puzzle, Not the Entire Picture

 

The researchers emphasize a crucial point: WISC scores are just one valuable piece of the puzzle when it comes to predicting academic achievement in children with ADHD and ASD. Numerous other factors significantly influence a child’s academic success. These include a child’s specific learning style, the classroom environment, access to qualified support services, and the presence of any additional learning difficulties.

For instance, a child with ADHD may score highly on the WISC Verbal Comprehension subtest, indicating strong language skills. However, if this child struggles with focus and organization due to their ADHD symptoms, their reading comprehension in the classroom might be hindered. Conversely, a child with ASD might score lower on certain WISC subtests but excel in specific academic areas due to their unique learning style and interests.

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Understanding these factors alongside WISC scores allows for a more holistic picture of a child’s academic potential.

Limitations and the Road Ahead

 

The study acknowledges some limitations. The research included studies that used different versions of the WISC and employed various measures of academic achievement. This heterogeneity in methodologies limited the data available for a more robust meta-analysis. Additionally, the study identified a smaller number of investigations on the association between WISC scores and academic achievement in children with ASD compared to ADHD.

Future research is crucial to further explore these relationships. Studies with larger and more diverse samples of children with ASD are needed to solidify the understanding of how WISC scores can predict academic achievement in this population. Additionally, investigating how WISC scores can be integrated with other factors to develop personalized academic interventions for children with ADHD and ASD would be highly valuable.

Empowering Children with ADHD and ASD for Academic Success

 

This research offers valuable insights for parents, educators, and healthcare professionals working with children with ADHD and ASD. While WISC scores can be a helpful tool, they should not be viewed in isolation. A comprehensive approach that considers a child’s unique strengths, challenges, and learning environment is essential for fostering academic success and creating a supportive learning journey for each child.

 

Source:

https://www.tandfonline.com/doi/pdf/10.1080/21622965.2024.2361022

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