Our boy is 17 months old. The biggest change we have seen in him this month is that he has finally started saying a couple of words and using a couple of signs. He is now signing "more" and "eat" and he's saying "baa" (bath), "dada," and "ball." He's only saying a couple of words, but he understands SO much! He follows directions and still loves playing with his sisters. He loves when they come home from school. We love our Aaron!