Topic guide

Executive function

Understand where a task is breaking down, reduce the demand on memory and planning, and test practical support one change at a time.

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Start with the point where intention stops becoming action.

Losing the steps may involve working memory. Not beginning may involve task initiation or an unclear first action. Switching repeatedly may reflect competing cues or attention regulation. A plan collapsing after change may involve cognitive flexibility.

Avoid turning the pattern into a judgement such as lazy, careless or unmotivated. A precise description gives you something practical to change.

The systematic review of adult ADHD cognitive domains provides evidence about differences across several executive processes, while also showing that profiles vary.

Sources & further reading

Explore the original sources.

Research paperSystematic reviewPubMed

Cognitive characterization of adult ADHD by domains: a systematic review

Systematic review of 93 studies examining cognitive functioning in adults with ADHD across attention, processing speed, executive function, working memory, inhibition, memory, social cognition and other cognitive domains.

Evidence note

Systematic review including 93 studies, 5,574 adults with ADHD and 4,880 healthy controls. It found group-level differences across multiple cognitive domains, particularly attention, processing speed, executive function, working memory and inhibition. Findings describe average group differences and should not be interpreted as a cognitive profile that applies identically to every person with ADHD.

Last checked 15 August 2026Visit source →
Research paperMeta-analysisPubMed

Executive functioning in adult ADHD: a meta-analytic review

Meta-analysis of 13 studies comparing executive and non-executive cognitive performance in adults with ADHD and control participants. It found medium-sized group differences in areas including inhibition, set shifting and verbal fluency, while also showing that difficulties were not confined only to executive functions.

Evidence note

Meta-analysis of 13 adult ADHD studies. It found medium group-level differences in several executive-function measures, particularly inhibition and set shifting, but also found differences in some non-executive domains. The authors caution against treating executive dysfunction as a complete or specific explanation of adult ADHD.

Last checked 15 August 2026Visit source →
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