I agree with Texcy’s post. I have many years of experience teaching students with ADHD and raising a son with ADHD. One of the reasons the lying happens is directly related to shame and fear of rejection. I agree that avoiding asking a question will eliminate the telling of the lie and is a better approach. I would be sure to state the truth and also add something like “I know you wish that didn’t happen” or “I am sure you feel bad about the choice you made and we can make a plan together to make a better choice next time”- depending on the behavior.