Abnormal Use of Personal Pronouns in Sign Language of Autistic Deaf Children

Abnormal use of personal pronouns is an important feature of autistic children's oral development. After comparing autistic deaf children with autistic children and deaf children respectively, it is found that pronoun avoidance also exists in the sign language development of autistic deaf children, but pronoun reversal rarely occurs. In pronoun avoidance, the sign language performance of autistic deaf children is more similar to that of autistic children than deaf children, which is more likely to be due to autistic children's own disorders than differences in language forms.  Different from autistic children and deaf children, autistic deaf children have their own unique performance in pronoun reversal: palm reversal. The reason may be that the disorder of personal pronoun reversal in autistic children may have different performance due to differences in language forms.