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2 months (personal/social)

Smiles responsively; looks at faces

2 months (fine motor)

Follows to midline

2 months (language/cognitive)

Vocalizes making cooing or short vowel sounds; responds to a bell

2 months (gross motor)

Lifts head; equal movements

4 months (personal/social)

Smiles responsively; smiles spontaneously; stares at
own hand

4 months (fine motor)

Grasps a rattle; follows past midline; brings hands to middle of body

4 months (language/cognitive)

Laughs and squeals out loud; vocalizes; makes "ooh" sounds

4 months (gross motor)

Lifts head and chest 45 and 90 degrees when prone; head steady when sitting

6 months (personal/social)

Reaches for toy out of reach; looks at hand; smiles spontaneously

6 months (fine motor)

Looks at raisin placed on contrasting surface; reaches out; follows completely side to side

6 months (language/cognitive)

Turns to rattle sound made out of vision on each side; squeals; laughs

6 months (gross motor)

Rolls over both directions; no head lag; lifts head and chest completely

9 months (personal/social)

Feeds self finger foods; tries to get toys; looks at hands

9 months (fine motor)

Transfers; rakes a raisin or Cheerio; picks up and holds a small object in each hand

9 months (language/cognitive)

Imitates sounds; says single syllables; begins to put syllables together

9 months (gross motor)

No head lag; sits without support; stands holding onto furniture

12 months (personal/social)

Plays pat-a-cake; feeds self; works to get a toy

12 months (fine motor)

Developed pincer grasp; bangs objects together; picks up two cubes

12 months (language/cognitive)

Jabbers; combines syllables; mama/dada is nonspecific

12 months (gross motor)

Stands briefly without support; gets to sitting position; pulls to stand

15 - 18 months (personal/social)

Begins to imitate; helps in the house; feeds self with increasing skill (still rotates the spoon, if used) and holds a cup

15 - 18 months (fine motor)

Builds a tower with increasing number of blocks; scribbles; able to put a block in a cup

15 - 18 months (language/cognitive)

Says 3 to 10 single words; can point to several body parts

15 - 18 months (gross motor)

Walks well forward and backward; stoops and recovers

3 years (personal/social)

Brushes teeth with help, puts on clothing, feeds a doll

3 years (fine motor)

Builds a tower of at least four to six cubes

3 years (language/cognitive)

Points to and names four familiar pictures (cat, horse, bird, dog, man); speech understandable 50% of the time

3 years (gross motor)

Throws a ball overhand; jumps; kicks a ball forward

4 - 5 years (personal/social)

Puts on a T-shirt; washes and dries hands; names a friend

4 - 5 years (fine motor)

Imitates a vertical line; wiggles thumbs; builds a tower of
eight cubes

4 - 5 years (language/cognitive)

Knows two adjectives (e.g., tired, hungry, cold); identifies one color; knows the use of two objects (e.g., cup, chair, pencil)

4 - 5 years (gross motor)

Balances on each foot for 1 second; jumps forward; throws a ball overhand

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