It's not official or anything, but just reading the questions would give you some idea. If you answer them, it gives a chart which lasts an hour - you can copy it.
_________________ A boy and his dog can go walking
A boy and his dog sometimes talk to each other
A boy and a dog can be happy sitting down in the woods on a log
But a dog knows his boy can go wrong
That merely says that they tried to test for it and, according to them, it happened in autistics to a different degree than their controls. In any event, some autistics seem to defy that, and I don't recall any part of the DSM metioning it. I didn't say they couldn't happen in autism, or even that they didn't usually occur. I merely said it wasn't an autistic symptom.