What usually appears
Motor: walks alone (by 18 months at the latest), squats and stands back up, climbs stairs holding on, scribbles with a crayon, drinks from a cup, eats with a spoon however messily.
Language: 5 to 20 words at 18 months, points to body parts on request, follows one-step commands without gestures, shakes the head for “no”, points to pictures in a book when named.
Social-emotional: plays alone alongside other children (parallel play), imitates household chores, shows affection, first tantrums from the frustration of not yet being able to say what they want.
Cognitive: imitates adults, stacks 2 to 4 blocks, matches simple shapes, knows what everyday objects are for.
How to support it
Speak in short sentences and repeat the words they attempt, offer simple choices (“apple or banana?”), provide push and pull toys, keep a consistent sleep routine. Screens are not recommended before 18 months.
When to be alert
At 18 months: not walking, does not point to show things, fewer than 6 words, does not imitate, does not notice when a parent leaves or returns, or loses skills already gained. The 18-month developmental screening is the right time to raise it.
CDC milestones at 1 year
The CDC "Learn the Signs. Act Early." checklist (2022 revision) for 1 year, grouped by area.
Social/Emotional
- Plays games with you, like pat-a-cake
Language/Communication
- Waves “bye-bye”
- Calls a parent “mama” or “dada” or another special name
- Understands “no” (pauses briefly or stops when you say it)
Cognitive
- Puts something in a container, like a block in a cup
- Looks for things they see you hide, like a toy under a blanket
Movement/Physical
- Pulls up to stand
- Walks, holding on to furniture
- Drinks from a cup without a lid, as you hold it
- Picks things up between thumb and pointer finger, like small bits of food
CDC milestones at 15 months
The CDC "Learn the Signs. Act Early." checklist (2022 revision) for 15 months, grouped by area.
Social/Emotional
- Copies other children while playing, like taking toys out of a container when another child does
- Shows you an object they like
- Claps when excited
- Hugs stuffed doll or other toy
- Shows you affection (hugs, cuddles, or kisses you)
Language/Communication
- Tries to say one or two words besides “mama” or “dada,” like “ba” for ball or “da” for dog
- Looks at a familiar object when you name it
- Follows directions given with both a gesture and words. For example, gives you a toy when you hold out your hand and say, “Give me the toy.”
- Points to ask for something or to get help
Cognitive
- Tries to use things the right way, like a phone, cup, or book
- Stacks at least two small objects, like blocks
Movement/Physical
- Takes a few steps on their own
- Uses fingers to feed themselves some food
