2. A tendency to perseverate
Children and adults with Asperger’s syndrome often have a tendency to get “trapped” on their thoughts. When that happens, they lose the ability to focus on anything else and become completely fixated on whatever it is they are talking about. As such, it is not unusual for a person with Asperger’s syndrome to talk incessantly about whatever it is they are fixated on.
This is known as perseverating. Someone who perseverates tends to say the same thing repeatedly, or act in a repetitive manner. He or she may say the same thing or repeat the same action to the point where it no longer makes sense and isn’t willing to stop it. For example, someone with Asperger’s syndrome may like lizards and may get so excited when they see one that they will not stop talking about them, reciting everything they know about the animals.