Executive Function Skill #8 of 11 By Dr. Katrin Kusek | ADHD & Executive Function Coach Part of the Executive Function Skills Series. Start with Post #1: "What Are Executive Function Skills? A Parent's Guide." Time Blindness Is Real Your child is always late. They perpetually underestimate how long things take. 'I only need five minutes' means 45 minutes. They lose track of time, miss deadlines, and seem to live in a bubble of perpetual now. ADHD researcher Russell Barkle