Hello! I have an 18 1/2 mo old son. He does not say any words yet, except "Ma-Ma and ga-ga" He babbles mostly, but can not say any one word. I read and talk to him constantly, I look at picture books with him, and he does not stay interested. I took him to his 18 mo check up, and my Ped said, as long as he understands most of what your saying, looks at you when you call his name, shows eye contact, and smiles at you when you smile, he is ok.