Sublime

High energy (hence the use of “hyperactivity” in the disorder name), coupled with a tendency toward lassitude, often mistaken for laziness.

Narcissism.

“Attention deficit trait,” or ADT,

Improve memory.

minds

Unexplained underachievement. The person is simply not doing as well as innate talent and brainpower warrant. There’s no obvious explanation, like poor eyesight, serious physical illness, or cognitive impairment due to head injury, say.