My 2.6yo daughter was really at or behind till she hit 13 months. She was 6 weeks early so she was still catching up. Soon after and especially around 16 months, she just took off. She had about 150 complete words ( not just some syllables) by 17.5 months with 2-3 word sentences. By 21 months, she had 7 word sentences, by 24 mo, 13 words and now she talks in long sentences (longest was 20 words) using and, but, because, so that, etc. What amazes me more than her vocabulary and grammar is her thoughts that she expresses using the language. It is such a delight. Anyway, I am new here as for a long time I thought all children are like my daughter. Then someone told me how my daughter seemed advanced. I have posted another discussion under the General Discussion forum with more info on her and would love to get your opinion on whether she is gifted. Sorry for the shameless plug.