Pulls to sitting with head drooping backwards

Sits with support of his hands

Sits unsupported for short periods

Supports whole weight on legs

Grasps feet

Transfers objects from hand to hand

Uses raking grasp

Routinely rolls from stomach to back and back to stomach

Plays peek-a-boo

Looks for a family member or pet when named

Explores toys with hand and mouth

Easily follows moving objects with eyes

Pulls cloth/blanket when toy is partially hidden under it

Grasps objects dangling in front of him

Looks for dropped toys

Laughs and squeals out loud

Can tell when others others are happy/mad by the tone of the voice

Responds to sounds by making sounds

Responds to spoken bye-bye by waving

Uses voice to express joy and displeasure

Localizes or turns toward sounds

Pushes up on extended arms while on tummy

Syllable repetition begins (i.e. mama, dada, baba)

Enjoys social play

Interested in mirror images

Can calm down within 1/2 hour when upset

Responds to other people's expression of emotion

Developmental Checklist (4 to 7 months)