I am a long-time Special Olympics volunteer and coach. Sign language is sometimes used by athletes with poor hearing or especially pronounced speaking difficulties but I have never met an adult athlete fluent in sign language, only children.
I know very little sign language but am intrigued by the interpreters I have seen. It is typical at large events (such as the Summer State Games) for there to be a sign language interpreter who interprets the speakers at awards ceremonies and the opening and closing of games. Among college-age friends I have from Special Olympics, especially those studying to be Special Education teachers, sign language is commonly taken for foreign language credit.
I was wondering if anyone was aware of noticeable differences in MR individuals using American sign language as opposed to average intelligence deaf individuals? Also, what considerations do Special Ed teachers have to take in when speaking to MR students and what areas of speech do such individuals typically have difficulty with?