People with AS don’t have quite the degree of rigid inflection and intonation as autistic individuals, but they still tend to speak in a monotone. Pitch typically lacks variation and is simply peculiar. They might talk too loudly or too formally. They tend to misunderstand the nuances of language, such as taking a sarcastic remark seriously or not grasping a joke or a metaphor.
They may go off on tangents during a conversation and their speech can seem incoherent. Even though in some cases this symptom might mean a possible thought disorder, it’s more likely that the incoherent speech is a result of their one-sided, egocentric conversational style, inability to provide background information, clearly distinguish changes in topic and tendency to express their inner thoughts.
Some experts view the long-winded and one-sided conversations as one of the most prominent differential features of the disorder. The child or adult may talk incessantly, usually about their favorite subject, often completely disregarding whether the listener is interested, engaged or trying to interject a comment, or change the subject. Despite such long-winded monologues, the individual may never come to a point or conclusion. Usually the other person can’t get a word in and is unable to change the conversation.