21/02/2026
This is very important to remember, and for our language delayed and Autistic kids, this may be true beyond 3 years old. I work on understanding negative form because of this issue, and encourage parents to state things in the positive to ensure the best chance of being understood.
❌ Don't run around the couch. (they hear "run")
✅ Sit on the couch
✅ You can run outside
❌ You mustn't hit your brother (they hear "hit your brother")
✅ Gentle hands (and demonstrate this concept)
✅ Give a high five (if they are looking to interact)
✅ Hit the pillow (if they are frustrated)
✅ No hitting (if they understand this) + add a visual
Alternatives to a negative behaviour depend on function of the behaviour.