They give up the second something gets hard
ADHD child behaviour
What to do right now
The difficulty triggered an escape response before problem-solving could start. ADHD makes effortful tasks neurologically expensive. Mistakes trigger shame. The quit is not laziness. It is their nervous system choosing escape from anticipated failure. Lower the bar. 'Just do the first line' is achievable. 'Just try harder' is not. Praise the attempt, not the result. Build tiny competence experiences.
What your brain just did
Your body
The task got hard and they stopped. The pencil went down, the body turned away, the words 'I can't' arrived before the attempt. The quit was faster than the thought.
Your brain
Low frustration tolerance in ADHD means the emotional cost of effort registers before the cognitive system can evaluate whether the task is actually impossible. Past failures make this worse. Each quit reinforces the pattern. Each forced attempt under shame makes it worse too.
What this did
Lower the bar to a height they can clear, then raise it gradually. 'Just do the first one' builds more competence than 'Try harder.' Praise the attempt, not the result. The willingness to start is the skill you are building.
What your child is experiencing
Their body
The task got hard and their body said 'escape.' The pencil went down, the body turned away, the attempt stopped before the problem-solving could start. The quit happened at the speed of an impulse, not a decision.
Their brain
Effort is neurologically expensive for ADHD brains. The cost of trying is felt immediately. The reward of succeeding is abstract and delayed. When the cost exceeds the perceived likelihood of success, the nervous system chooses escape.
What they need
A task they can succeed at. Lower the bar until they clear it, then raise it one step. Praise the attempt: 'You started and that was the hard part.' Build the belief that starting is survivable.