R9990/2026-03-20/C001/SRC05/E01¶
Working memory deficits in ADHD are very large in magnitude, affecting 75-81% of individuals with ADHD
URL: https://pmc.ncbi.nlm.nih.gov/articles/PMC7483636/
Extract¶
"ADHD status was associated with very large magnitude impairments in central executive working memory (d=1.63-2.03; 75%-81% impaired)."
The study analyzed 172 children aged 8-13 using bifactor modeling. Central executive working memory showed correlation of r=.63 with ADHD status (Cohen's d=1.63). The findings indicate that people with ADHD "would struggle with cognitively demanding tasks requiring active manipulation of information — such as reorganizing complex narratives or following multistep instructions."
Phonological short-term memory was not impaired, suggesting basic verbal retention remains functional. The deficit is specifically in executive working memory — the capacity to hold, manipulate, and reorganize information simultaneously.
Relevance to Hypotheses¶
| Hypothesis | Relationship | Strength |
|---|---|---|
| H1 | Supports | STAR requires exactly the cognitive function (organizing narrative into structured format under time pressure) that is impaired in ADHD |
| H2 | Supports | Identifies the specific mechanism — executive working memory, not basic memory — explaining why preparation might help but real-time performance suffers |
| H3 | Contradicts | Peer-reviewed evidence of large-magnitude cognitive deficit directly relevant to STAR task demands |
Context¶
This is a peer-reviewed study in a major journal using rigorous methodology (bifactor modeling, n=172). The study examined children, not adults, which is a limitation when generalizing to job interview contexts. However, ADHD working memory deficits are well-established as persisting into adulthood across multiple studies.
Notes¶
The specific connection to interviews is an analytical inference, not a finding of the study itself. The study establishes the cognitive mechanism; the application to STAR interviews is this research agent's judgment.