CDC checklist

18 Month Milestones

Here's what most children (75% or more) do by 18 months, according to the CDC. Tick off what you've seen and bring the list to your next checkup.

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Social and emotional

Language and communication

Learning and problem-solving

Movement and physical

If something worries you

You know your child best. If your child isn't reaching one or more milestones, has lost skills they once had, or you have other concerns, talk with your child's doctor. The CDC says not to wait. You can also contact your state's early intervention program at cdc.gov/FindEI.

Things to try at 18 months (from the CDC)

  • Use positive words and give more attention to behaviors you want to see ("wanted behaviors"). For example, "Look how nicely you put the toy away." Give less attention to those you don't want to see.
  • Encourage "pretend" play. Give your child a spoon so she can pretend to feed her stuffed animal. Take turns pretending.
  • Help your child learn about others' feelings and about positive ways to react. For example, when he sees a child who is sad, say "He looks sad. Let's bring him a teddy."

Source: CDC, What most children do by 18 months (CDC Learn the Signs. Act Early. milestone checklists), retrieved 2026-10-16. These checklists don't replace developmental screening by your child's doctor. Sprout Diary is not a medical service.