I think 40% of people dyspraxia have ADHD.
Have you heard of dyspraxia, http://www.dyspraxiausa.org ?
It is in the same category as dyslexia, a learning disability in the USA or a learning difficulty in the UK.
I have a high IQ.
The executive function is where working memory operates. People with ADHD and dyspraxia, hasve average/below average working memory.