Developmental Milestones Chart Page 4
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13Infants and Toddlers
Physical
Cognitive
Social
Newborn: rough, random,
Sensori-motor: physically
Attachment: baby
uncoordinated,
explores environment
settles when parent
reflexive movement
to learn about it;
comforts; toddler
repeats movements to
seeks comfort from
3 mo: head at 90 degree
master them, which
parent, safe-base
angle, uses arms to
also stimulates brain
exploration
prop; visually track
cell development
through midline
5 mo: responsive to
4-5 mo: coos, curious
social stimuli; facial
5 mo: purposeful grasp;
and interested in
expressions of
roll over; head lag
environment
emotion
disappears; reaches for
objects; transfer objects
6 mo: babbles and
9 mo: socially
from hand to hand;
imitates sounds
interactive; plays
plays with feet;
games (i.e., patty-
exercises body by
9 mo: discriminates
cake) with
stretching, moving;
between parents and
caretakers
touch genitals, rock on
others; trial and error
stomach for pleasure
problem solving
11 mo: stranger
anxiety; separation
7 mo: sits in “tripod”; push
12 mo: beginning of
anxiety; solitary play
head and torso up off
symbolic thinking;
the floor; support
points to pictures in
2 yr: imitation, parallel
weight on legs;
books in response to
and symbolic, play
“raking” with hands
verbal cue; object
permanence; some
9 mo: gets to and from
may use single words;
sitting; crawls, pulls to
receptive language
standing; stooping and
more advanced than
recovering; finger-
expressive language
thumb opposition; eye-
hand coordination, but
15 mo: learns through
no hand preference
imitating complex
behaviors; knows
12 mo: walking
objects are used for
specific purposes
15 mo: more complex
motor skills
2 yrs: 2 word phrases;
uses more complex
2 yrs: learns to climb up
toys and understands
stairs first, then down
sequence of putting
toys, puzzles together
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