Anonymous wrote:When your toddler starts talking in sentences at 18 months, but doesn't show reasoning of an older child--average
When your toddler loves books but isn't reading yet--average
When your toddler loves puzzles but isn't doing 100 piece ones yet--average
When your toddler can count to 20 but can't count the 12 buttons on the table--average
Genius kind of hits you in the face.
Above average smart kids do not necessarily hit you in the face, the same way genius kids do. Had you asked my parents if I was a genius, they would certainly say no. This is because I am not. At the same time, I consider myself above-average smart (IQ in 160s). There are no stories in my family about me reading at 2 or doing calculus at 4. I did start playing musical instruments at a young age, but that's about it. It's not before I went to school, that I realized that I "got" things a lot quicker than my peers.
To the OP: I am big believer in nurture. So, please OP, nurture your child and give her ample opportunities to develop. I am also a big believer in messaging. I hope you let your child develop, discover her strengths, and rise to her potential, without being given the message that she may just be average. While I do not advocate for empty praise, some healthy encouragement can go a long way. I hope your sweet 21 months old exceeds all your expectations, OP. In the mean time, enjoy your talker and your book lover.