Special Child of Kris

I know that Joshua was a special child of Kris Aquino. She has openly told the public about it and was loved for being honest like that. Yesterday, i was able to watch Kris TV and Joshua and Bimby were there. Then, Kris asked Joshua a question, and i was shocked that Joshua spoke like a small child, cannot pronounce the word well. I thought his speech is okay. But it seems that his speech is as well affected by being a special child. But i was amazed at how tall he was!