Retains hold of object/rattle

Brings hands toward center of body when lying on back

Raises head and cheek when lying on stomach

Supports upper body with arms when lying on stomach

Stretches legs out when lying on stomach or back

Opens and shuts hands

Pushes down on his legs when his feet are placed on firm surface

Occasionally rolls from stomach to back

Responds to voice (i.e. turn to, wiggle, reacts)

Watches face intently

Follows moving objects

Recognizes familiar objects and people at a distance

Starts using hands and eyes in coordination

Makes sucking sounds

Smiles at the sound of a friendly voice

Cooing noises; vocal play

Attends to sound

Startles to loud noise

Makes eye contact

Begins to develop a social smile

Enjoys playing with people and may cry when playing stops

Becomes more communicative and expressive with face and body

Developmental Checklist (1 to 3 months)