In people with ADHD, cognitive abilities (such us planning, organising, regulating emotions) can impose a huge challenge.
Scientists haven’t agreed yet on which are the executive functions of a human brain. Dr. Russell Barkley, for instance, categorize them in five: 1) Inhibit your behavior; 2) Use visual imagery; 3) Talk to your self; 4) Plan and problem solve; 5) Control your emotions.
Dr. Barkley explains what time blindness is, and he goes as far as saying that, “ADHD is, to summarize it in a single phrase, time blindness.”