Contrasting deficits on executive functions in Chinese delinquent adolescents with attention deficit and hyperactivity disorder symptoms and/or reading disability.
Teens with both ADHD and reading disability show a unique interference-control gap and the worst offense records.
01Research in Context
What this study did
Kean and team tested 11- to young learners boys in a Hong Kong detention center.
They split the teens into four groups: ADHD only, reading disability only, both, or neither.
Each teen took a battery of computer tasks that tap inhibition, memory, and speed.
What they found
ADHD-only teens were slow to stop themselves on a Go/No-Go task.
Reading-only teens were slow to scan and remember pictures.
The teens with both ADHD and reading trouble had a special problem: they could not; not filter out distracting words, and they had the worst arrest records.
How this fits with other research
Scott et al. (2009) looked at the same locked-up boys and found low self-esteem, not executive gaps. The two studies line up: one shows how ADHD looks inside the head, the other shows how it feels.
Iglesias-Sarmiento et al. (2017) tested kids in regular schools and saw the same split — ADHD brings poor inhibition, learning disability brings slow processing. The pattern holds inside and outside detention walls.
Kanevski et al. (2023) moved the lens to younger kids with ADHD plus motor problems. They also found unique memory gaps, showing that mixing ADHD with any second condition creates extra cognitive weight.
Why it matters
When you screen a teen with both ADHD and reading issues, probe interference control — it is the red flag that pure ADHD or pure RD alone will not show. Flagging this combo early may help curb deeper delinquency.
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Add a Stroop-style word-color task to your intake battery for any detained teen with ADHD plus reading concerns.
02At a glance
03Original abstract
Many studies reported high prevalence of reading disability (RD) and attention deficit hyperactivity disorder (ADHD) among delinquent adolescents. Very few have examined their cognitive profile. The present study compared the executive functions (EFs) and severity of delinquency in delinquent adolescents with RD and/or ADHD symptoms (AS). Delinquents with AS (n=29), RD (n=24), comorbidity AS+RD (n=35) were recruited from juvenile institutions along with typically developing controls (n=29) from local schools; all completed EF assessments and self-report questionnaires on delinquency. Results showed that pure AS group exhibited impaired inhibition while the pure RD group was weak in processing speed and visual memory. The comorbidity group showed unique impairments in interference control and significantly higher delinquency severity. The present findings suggest that comorbidity AS+RD may influence delinquency severity. It also provides a more comprehensive picture of the unique EF deficits associated with different groups, allowing for better matching for future identification and intervention programme.
Research in developmental disabilities, 2014 · doi:10.1016/j.ridd.2014.07.046