Executive Function Profiles in ADHD and Dyslexia: A Mixed-Method Neurocognitive Analysis

Area of Science:

• Neuroscience
• Developmental Psychology
• Clinical Psychology

Background:

• Executive function (EF) impairments are prevalent in neurodevelopmental disorders.
• Group-level analyses may obscure significant cognitive heterogeneity.
• Understanding EF heterogeneity is crucial for effective intervention.

Purpose of the Study:

• To explore executive function heterogeneity in children with ADHD, dyslexia, and comorbid conditions.
• To utilize a mixed-method approach grounded in clinical practice.
• To identify distinct EF profiles beyond categorical diagnoses.

Main Methods:

• Integrated standardized neuropsychological data (NEPSY-II, WISC-IV, Woodcock-Johnson IV).
• Conducted a case-based thematic synthesis of 11 clinical evaluations.
• Employed semi-inductive analysis informed by preliminary clinical sample patterns.

Main Results:

• Identified three executive function profiles: globally reduced EF, verbal-mnestic vulnerability, and selective executive control deficit.
• These profiles captured clinically meaningful patterns not evident in diagnostic classifications.
• Demonstrated heterogeneity in inhibition, attention, working memory, and self-regulation.

Conclusions:

• An integrated, profile-based approach is valuable for understanding EF heterogeneity in neurodevelopmental conditions.
• This approach enhances assessment ecological validity and supports individualized intervention planning.
• Findings are preliminary and hypothesis-generating, warranting further investigation.