In the 1988 movie “rain man” the character Raymond Babbitt lives in an institution, yet is described as being “high-functioning”.
Inaccurate as this may be, you have to remember that in 1988 autism was a very rare disorder, and only the most severe cases were generally diagnosed. Aspergers wasn’t even an official diagnosis until 1992.
Today, he would probably be what under the DSMV-5 is called “autism level 2”
-He is verbal, but he has a very abnormal speech pattern, and is incapable of holding a normal conversation.
-He is extremely dependant of routines.
-He suffers extreme meltdowns on an almost daily basis over the smallest things.
This is just my take on it. There might be others that disagree wit me, and I would love to read your take on it.