My Son is five and can have meltdowns or ignore us even on occasions do things if we tell him not to. My sister who’s a SENCO in a primary school believes he has PDA, she’s both learnt and come across it. My husband thinks it’s ODD but our son has speech and language delay and can’t argue with us verbally which I thought was a symptom being able to argue verbally. We are awaiting ASD assesment so maybe we need to ask at he’s assessment?