I have a 26 month old dcg. Very smart girl. Her parents still sign with her so she trys that here. Her verbal skills are so poor. She will just grunt for the affirmative and shake her head no for the negative. I have had her for a year and always ask her to say the words I repeat to her and she does that only when asked. I think her problem is the parental signing at this age. They think her gruntal answers are cute.