My daughter was saying complete words at 6 months duck quack quack was her favorite. She progressed very quickly from one or two word sentences to complete sentences. She knew all her colors, body parts ABC between 12 and 18 months. She walked at 9 months. We also had a scoot a chair and climb up episode when she was very small. When she was very small she would take books or other long objects to turn lights on then she figured out how to move objects over to climb on so she climbed on all kinds of things. She started reading at 3 just picked up a book one day and there she went. I questioned for a long time if she was gifted even though I have been around tons of children and even worked in a day care when I was in college. Like another poster said people pick it up I've had classmates parents make comment like surely you know she's a little advanced of the others and a friend with a child the same age nicknamed her the Harvard baby before she was a year old. Hope this helps.