Kaelyn has always understood the concept of "yes" and "no". Maybe not always, but she has for a while now. She is very clear when she says "no". It's always "no". Sometimes with a head shake. However, when she says "yes"... well, first off, she rarely says yes.
Kaelyn asks for something.
Me: You want ____?
Kaelyn looks at me expectantly.
That's definitely different from when I get it wrong. Then she clearly says "no".
In the last week-ish, we've noticed that she still doesn't say yes. But she says "okay" and then smiles. It's so stinkin' cute! :)
Today she came up to me, did the sign for "eat" by my mouth, and said "more cheese please?" I asked "you want cheese?" "Please?" (With the sign.) <---that alone is a first. We usually have to prompt her to sign or say please. I asked again "you want cheese?" (Why I asked again, I don't know. I knew what she wanted the first time she said it so I really didn't need to ask it in the first place.) "Okay!" And then she grins and nods her head. "Okay."
It's awesome how kids pick up what you do and does it so much cuter than you ever could.