[Academiadotorg]

It ranges all the way from hyperactivity on the low end to what used to be called mental retardation on the high end.

[nopardons]

Oh it's even worse than that now! And like ADD and ADHD, often overly diagnosed; re calling "normal" kids out for having it.

And since there were studies ( for REAL scientific ones, unlike today! ), done on autism, as far back as the 1930s, that I know of, it's NOT anything "new".