Anonymous wrote:No. This is actual very typical of kids. They watch the same movie many times; will repeat the same activity over and over as your son is doing, do many activities again and again. This is how kids master material. Children do not absorb everything (or almost everything) the way adults do. They don't have the experience for that. They need to repeat a project, see a movie, or read a book several times to do it. They may read their magazines again and again.
Doing a project over and over may also be a part of enjoyment of a new hobby or craft and may be soothing and doesn't have to be about mastery. I used to do jigsaw puzzles over and over to relax.
Perseverative behavior is totally different.
If you were to go over to the craft table or basement or wherever and ask your son to go with you to get an ice cream sundae, or order him to go to a doctor's appointment, would he go? Or would he feel compelled to continue making his airplane. Would he shriek uncontrollably if you tried to stop him?
These are problems with transitions and being rigid (which kids with autism have problems with) not examples of perseveration.
Perseveration behavior is doing something over and over again. This repetitive behavior (which all kids have) is considered perseveration and problematic when it interferes with functioning such as when the kid is unable or has great difficulty transitioning to another task.