Follow the link to listen to an except from BBC Radio 4's Today Programme, (14/09/2017):-
Sadly typical - diagnose him, locating the problem solely within the child. 'Callous & unemotional traits' seems a popular one, (last season it was PDA or ODD). Therup at the young person (benignly lecture - Even the interviewer tries this gentle persuading; "you can see that being nice to people works?").
When you 'just can't get through to 'Max', write him off. Send him away. NVR could've worked wonders here.
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