- understands being told "no"

- responds to his/her name

- responds to the telephone ringing or a knock at the door

- gets what s/he wants through gestures (e.g. reaching to be picked up)

- plays social games with you (e.g. "Peek-A-Boo")

- enjoys being around people

- babbles and repeats sounds such as "bababa" or "duhduhduh"