Keep boundaries clear and calm
Make rules your child can understand, and respond the same way each time without escalating.
Very low certaintyADHD evidence
Start with the time you have
1 minute
Say one calm, concrete boundary out loud: 'I will help you, and I will not let anyone get hurt.'
5 minutes
Choose one repeated conflict and decide how to explain the expectation in simple words.
15 minutes
Discuss one rule and a proportionate response with your child, then check that they understand.
How sure the science is
Very low certainty, ADHD evidence
We barely know. Small or short trials, and people knew what they were getting. The true effect could be much smaller, or zero. Measured in people with ADHD.
- 13 trials
- 1439 people
- children and teens
- parent rated
- about 12 weeks
- measured on oppositional symptoms (ODD)
Explicit NICE parenting recommendation; EBI oppositional-symptom estimate is for full parent-mediated programmes. See this row on the evidence map
The number, drawn
Use clear rules and consistent responses
Why it matters
NICE supports clear, appropriate rules and consistent responses for children with ADHD. Full parent-mediated programmes gave a small improvement in parent-rated oppositional symptoms near 12 weeks, SMD 0.249, but EBI certainty was very low. That result belongs to the whole programme, not any particular consequence, and whether the benefit lasts is uncertain.
How to do it
- Agree a small number of rules everyone can understand, at a calm moment.
- Explain ahead of time what a proportionate response will be. Keep the words brief and calm.
- Watch for confusion or overwhelm, and help your child practise what's expected.
Avoid physical punishment, humiliation or withholding basic needs. Ask for professional help if family conflict or aggression is escalating.
Putting it into practice
In real life
- Agree beforehand that a shared game pauses if someone starts hitting.
- Say what is expected in a short sentence, then allow time to process it.
Watch out for
- Common mistakeChanging the rule in anger makes it harder to understand, so return to the agreed expectation.
- Common mistakeTreating confusion as defiance can escalate things. Check they understood, and offer help.
Trusted guides
How we rated it
- Evidence grade
- A Moderate or high certainty evidence in people with ADHD, or an explicit ADHD guideline recommendation.
- The number
- Use clear rules and consistent responses (NICE, public HSC Northern Ireland copy, 2018)
- Benefit
- 41/100 The benefit score is an editorial prioritization for the general list, weighted by certainty. It is not a prediction of what will happen for you.
- Effort
- Some effort
Sources
- Tier 1 guidelineADHD: diagnosis and management, NG87, information and supportNICE, public HSC Northern Ireland copy, 2018
- Tier 1 guidelineAttention, activity, emotions, and behaviour (undated)Berkshire Healthcare NHS Foundation Trust, 2026
- Tier 1 guidelineEBI-ADHD umbrella review: re-estimated dataset, commit 86eff22a9ffbGosling et al., BMJ accompanying open data, 2025
- Tier 1 guidelineBenefits and harms of ADHD interventions: umbrella review and platform for shared decision makingBMJ, full text via PMC, 2025
General information about ADHD, not a diagnosis or an individual treatment plan. Tailoring changes the order of suggestions; it does not assess you. Medication decisions belong with you and a qualified clinician.