The mental age of someone with ADHD can be approximately 30% less than their chronological age, indicating a lag in executive functioning compared to their peers.

ADHD Mental Age Chart
Read our comprehensive ADHD Mental Age Chart, a crucial tool to understand ADHD's impact on developmental abilities and make effective support strategies.
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ADHD Mental Age Chart Template
Commonly asked questions
The 30% rule for ADHD suggests that individuals with ADHD may have an executive age or mental age that is about 30% less than their actual chronological age, highlighting a delay in specific cognitive skills.
The 10 and 3 rule for ADHD suggests that a 10-year-old with ADHD may have executive functioning skills similar to a 7-year-old (30% less), highlighting the importance of adjusting expectations and strategies accordingly.
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