Imaginative play is an activity seldom observed. The lack of social-communicative gestures and utterances is apparent during the first few months of life. Preferred interaction style could be characterized as extreme isolation. Poor Communication Abilities Functional language is not acquired fully or mastered. Content of language is usually unrelated to immediate environmental events.
Utterances are stereotypic and repetitive.
Conversations are not maintained. Spontaneous conversations are rarely initiated. Speech can be meaningless, repetitive and echolalic. Many fail to use the words I and yes, and problems with pronouns in general are apparent. Both expressive and receptive language is extremely literal.