UPDATE: He's also been diagnosed with childhood apraxia of speech. Basically, his brain cannot create the correct paths to turn thoughts in to words.
On November 14, we took Alvin to have an evaluation for the local special needs preschool. Today, we got the results of that evaluation.
In the Vineland Adaptive Behavior Scales, a standard score is a 97, though anything from 91-100 is considered 'average/normal'. Alvins scores are:
Communication: 74 Adaptive level: Moderately low
Daily Living Skills: 71 Adaptive level: Moderately low
Socialization: 63 Adaptive level: Low
Motor: 65 Adaptive level: Low
Overall Composite: 65 Adaptive level: Low
So, as you can see, based on this alone, Alvin is severely behind what is considered 'normal' for his age group. Then, they evaluated his Pre-School Language skills.
Auditory Comprehension: he's equivalent to a 2 year, 8 month old child. So, he's exactly a year behind there. For Expressive Communication, he's the equivalent to a 1 year, 4 month old child. So, he's 2.5 years behind there. These two give him an overall equivalent to that of a 1 year, 11 month old child. So, Alvin is severely behind. He'll be starting his special needs pre-school tommorrow. So our hopes are high that with that, he will start to catch up to his peers, but we do realize that he'll likely never be 'average'.