Clinical Neurology · Child Neurology

Developmental Milestones

Developmental milestones by age — gross motor, fine motor, language, and social/cognitive domains.

Age	Gross motor	Fine motor	Language	Social / cognitive
2 months	Lifts head/chest when prone	Tracks past midline	Alerts to sound Coos	Recognizes parent Social smile
4–5 months	Rolls front to back, back to front	Grasps rattle	Orients to voice Begins to make consonant sounds, razzes	Enjoys looking around Laughs
6 months	Sits unassisted	Transfers objects Raking grasp	Babbles	Stranger anxiety
9–10 months	Crawls Pulls to stand	Uses three-finger (immature) pincer grasp	Says "mama/dada" (nonspecific)	Waves bye-bye Plays pat-a-cake
12 months	Cruises (11 months) Walks alone	Uses two-finger (mature) pincer grasp	Says "mama/dada" (specific)	Imitates actions
15 months	Walks backward	Uses cup	Uses 4–6 words	Temper tantrums
18 months	Runs Kicks a ball	Builds tower of 2–4 cubes	Names common objects	Copies parent in tasks (e.g., sweeping)
2 years	Walks up/down steps with help Jumps	Builds tower of six cubes	Uses two-word phrases	Follows two-step commands Removes clothes
3 years	Rides tricycle Climbs stairs with alternating feet (3–4 years)	Copies a circle Uses utensils	Uses three-word sentences	Brushes teeth with help Washes/dries hands
4 years	Hops	Copies a square	Knows colors and some numbers	Cooperative play Plays board games
5 years	Skips Walks backward for long distances	Ties shoelaces Knows left and right Prints letters	Uses five-word sentences	Domestic role playing Plays dress-up

Koriesh's Extract in Pediatric Arts