I am doing research on the effects of teaching a deaf child to speak and how it plays into their personal lives and on to the deaf community. As an interpreter I have noticed that my oral clients tend add new signs that are not ASL. I feel like all people should have the choice to be involved in the Deaf and/or hearing community. How do you think speech effects their identity and the identity of the deaf community?
With regard to the creation of new signs and, I suspect, your concern about the use of initialized signs, you might want to take a look at linguistics resources. Contrary to claims, there does not appear to be any negative evidence concerning the use of initialized signs. “Signs that are not ASL” are used by deaf people all the time; that is part of the ongoing evolution of language.
Concerning the relation of speech and identity, a variety of books have been written on the subject, usually by deaf people more invested in being part of the hearing community than the Deaf community. With regard to the evidence base, let me offer two suggestions: Most generally, you might look at Irene Leigh’s new book A Lens on Deaf Identities, Oxford, (2009). Specifically with regard to children, try Most, T. (2007). Speech Intelligibility, Loneliness, and Sense of Coherence Among Deaf and Hard-of-Hearing Children in Individual Inclusion and Group Inclusion. Journal of Deaf Studies and Deaf Education, 12, 495-503.