My eleven year son has low functioning Autism. He is non-verbal. He attends public school in a special education center. He is recieving only 1/2 hour of speech a week with three other students in his classroom. I have been fighting to get him more speech and to have him get one-on-one speech. Can some one point me in to the right direction of where to find research studies that I can bring to his IEP to support my claim that he is not getting the services he needs or what approach should be used with him?