I think it can be phrased in terms of the famous explore/exploit dichotomy from cybernetics. An agent with ADHD is more likely to exploit/dig deeply once it get

I think it can be phrased in terms of the famous explore/exploit dichotomy from cybernetics. An agent with ADHD is more likely to exploit/dig deeply once it gets the "scent", but that threshold is higher. A weak signal of ambient reward will lead to impatient exploring. Conversely, a non-ADHD agent will sooner find something good enough to fixate on but will also sooner give up on that region of interest and go on to the next scent. This would explain the paradox of hyper focus of ADHD and the corresponding moderation/saturation in non-ADHD as well.