Social smile
6wk
Hand regard
3mo
Shakes rattle
6mo
Bangs objects together
9mo
Interactive play (peek-a-boo)
9-12mo
Pretend play (eg feeds doll with bottle)
18mo
Symbolic play (eg feeds doll using blocks as food)
2y
Imaginative play (eg feeds doll with imaginary food)
3y
Make believe play
4y
Observes rules
5y
Waves bye-bye
9mo
Shared gaze
9mo
Proto-imperative pointing
12mo
Proto-declarative pointing
18mo
Claps hands
12mo
Gestures
12mo
Empathy eg shows pride when applauded
18mo
Names a friend
3y
Has a best friend
4y
Finger feeds
9mo
Drinks from lidded cup
12mo
Eats with spoon
18mo
Eats with fork and spoon
3y
Dresses without help (except buttons and laces)
4y