Would you care to bet on this? Would you assert that a Deaf child
of Deaf parents, would not be able to reach the same level as the child implanted early?
At worse, this is a blanket statement; There's too many factors that influence a Deaf child's language development, and the inclusion of the CI is just one of those factors, nothing more or less. There will always be CI failures and as well as ASL successes and vice versa.
I do because I can see it around me. As stated in the previous answer, I see it happening. Of course there are other factors, but do you believe that you can learn to speak french in USA as fast as when you are in France? NO, because in USA you can still get around with english. In France you HAVE to use french so you will learn very quick and at a very high level.
When a child with CI is in a sign-environment, it will continue to use it AT THE EXPENSE of speech, since speech is not required. Also, a child with CI in a group with children without CI will be the odd one, so it will react to this and try to fit in.
My daughter has had her CI now for 1-1/2 years and learned to use it, and get used to sounds in a deaf/hearing environment. We wanted her to have this transition so that she would still be able to communicate in sign when needed.
But now we can see that she needs more challenges in speech, so we decided that she will go 60% to a only-hearing kindergarden in august and the other 40% in the current (sign/speech) kindergarden.
I humbly disagree with your characterization that it's
worse to prevent parents from knowing valuable information about the CI. I'm all for fully informed choices by parents in deciding the best course for their Deaf children, and any omission of invaluable information, be it about the CI, about ASL, CS, etc. is just as equally bad.
Remember, I am a hearing parent from a hearing background with no familiarity to deafness prior to finding out that my child was deaf. I believe that ALL information should be given, both sides. My point is that speech is leaned best at young age. Postponing the possibility to hear will have an effect on speech develoment later on. So when a child has CI based on wrong information I believe that this is easier rectified that when a child is denied hearing based on wrong information. Both cases are wrong, but the future effect is quite different.
You do make an excellent point about the state of computer technology. Twenty years ago, computers were just making headway into homes and had crude audio/video abilities along with limited productivity software. Now, I've got an Athlon 64 eMachines whizzing along at millions of colors and can surf the Internet, get entertaining multimedia content, and much more.
The same technological curve holds true for speech processors as used by the CI industry! Nowadays, the speech processors are very much advanced and can stimulate a whole lot more sounds in a wide spectrum, and have high bandwidth, than anyone would have envisioned 20 years ago. This translates into better results for CI recipients in speech discrimination, especially in very young children.