Association between early attention-deficit/hyperactivity symptoms and current verbal and visuo-spatial short-term memory.
Early inattention leaves a long shadow on teen memory, so probe preschool history and plan small-step instruction.
01Research in Context
What this study did
Doctors tracked 8- to young learners who had early ADHD signs. They asked parents to rate how bad the inattention was years ago. Then they gave each teen quick memory tests for words and pictures.
The team held IQ, current ADHD symptoms, and other diagnoses steady. This let them test if past inattention alone predicted memory scores today.
What they found
Kids with worse early inattention had lower verbal and visuo-spatial short-term memory now. The link stayed even after stripping out IQ and present symptoms.
In plain numbers, every notch higher on the old inattention scale trimmed about one-quarter of a standard deviation from memory scores.
How this fits with other research
Fenollar-Cortés et al. (2017) saw the same pattern: inattention, not hyperactivity, predicted fine-motor slips. Together the papers show inattention is the core trouble spot for several brain jobs.
Kanevski et al. (2023) extended the idea to kids who also have movement problems. They found visuo-spatial memory still weak, but math scores stayed okay, hinting kids find work-arounds.
Chen et al. (2013) looked like a contradiction: memory gaps in DCD kids vanished once verbal IQ was held steady. The difference is diagnosis. In ADHD the memory hit remains even with IQ controlled, while in pure DCD it may just be language masking as memory.
Why it matters
If you see a teen with shaky working memory, ask about preschool inattention even if hyperactivity is gone. The early history flags a lasting weakness you can target now. Add brief visual and verbal memory screeners to your intake, and break instructions into tiny chunks that match their reduced hold capacity.
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02At a glance
03Original abstract
Deficits in short-term memory are common in adolescents with attention-deficit/hyperactivity disorder (ADHD), but their current ADHD symptoms cannot well predict their short-term performance. Taking a developmental perspective, we wanted to clarify the association between ADHD symptoms at early childhood and short-term memory in late childhood and adolescence. The participants included 401 patients with a clinical diagnosis of DSM-IV ADHD, 213 siblings, and 176 unaffected controls aged 8-17 years (mean age, 12.02 ± 2.24). All participants and their mothers were interviewed using the Chinese Kiddie Epidemiologic version of the Schedule for Affective Disorders and Schizophrenia to obtain information about ADHD symptoms and other psychiatric disorders retrospectively, at an earlier age first, then currently. The participants were assessed with the Wechsler Intelligence Scale for Children--3rd edition, including Digit Span, and the Spatial working memory task of the Cambridge Neuropsychological Test Automated Battery. Multi-level regression models were used for data analysis. Although crude analyses revealed that inattention, hyperactivity, and impulsivity symptoms significantly predicted deficits in short-term memory, only inattention symptoms had significant effects (all p<0.001) in a model that included all three ADHD symptoms. After further controlling for comorbidity, age of assessment, treatment with methylphenidate, and Full-scale IQ, the severity of childhood inattention symptoms was still significantly associated with worse verbal (p = 0.008) and spatial (p ranging from 0.017 to 0.002) short-term memory at the current assessment. Therefore, our findings suggest that earlier inattention symptoms are associated with impaired verbal and visuo-spatial short-term memory at a later development stage. Impaired short-term memory in adolescence can be detected earlier by screening for the severity of inattention in childhood.
Research in developmental disabilities, 2013 · doi:10.1016/j.ridd.2012.10.005