As a person with ADHD there is definately nothing wrong with my memory. As long as I'm paying attention I will remember whatever I learn, however I do have quite a bit of trouble remembering certain tasks I'm supposed to do at the right time I'm supposed to do it, like remembering to get milk on my way home, or the one thing my husband asked me to get him while I'm at the store, or remembering to take my list into the store, but things like that are mostly due to getting distracted or remembering other things instead, because I definately at some point do remember as I'm slapping my forehead and calling myself an idiot. So that would all be due to either not getting the information in the first place(good hint, make sure that the ADHD person you are speaking to is actually looking at you AND responding to you, because looking at you doesn't necessarily mean they are paying you any attention ;and this is not on purpose) or getting distracted and temporarily and inconveniently forgetting the right information at the wrong time.