HM:
So, all of the following may be true about your dd, and adhd may not have anything to do with her behaviour. But I am sure that what was going on with me appeared very similar to my parents/teachers/college friends who just could not believe the level to which I would procrastinate and then somehow manage to get it done. But *inside* there was more to it than that, some of what you have addressed in other posts about your dd (imposter type stuff, perfectionism, fear of failure) all combined with motivational paralysis, which for me anyway is best explained by adhd. (I also clearly see it in my father, brother, and cousins, and I know there is a genetic component to adhd). If any of this continues to seem like it might possibly be an issue for your dd, I think the book Driven to Distraction might be helpful. When I was 11 I think that the executive function stuff didn't appear to be an issue to those around me b/c the giftedness compensated for it (and honestly even with many classes in college). But it would have been helpful to me to sort this all out sooner.

"We think probably not-- relative to chronological peers, she seems pretty on top of things, and she can focus quite readily when she's willing to do so. She simply never forgets things that are important to her, and she has no trouble absorbing/recalling even quite complex information-- when it suits her.

She's just completely oppositional when it comes to being told to do something that she thinks is pointless and unpleasant.

She's very much an adrenaline junkie. I can see that light of exhiliration in her eyes when she's in the middle of chaos and riding the hurricane to get more finished than should be humanly possible... she definitely sets herself up to do it deliberately on some level. She truly thinks of herself as someone who "works best under pressure" and views it as a time-saving technique. LOL."