Help me to answer my dad, who has delivered a fantastically ignorant diatribe (mainly along the lines of Ds1 "can't possibly be autistic, he's always smiling at me. He's a happy boy Colditz, he's not Autistic") but he has raised a point I can't answer.
Where were the children with ADHD 40 years ago?
Where were the children with High Functioning Autism?
According to him, and many people in their 50s, there WAS no ADHD, or CERTAINLY there wasn't in their school .... so ... where were they?