Medicine & USMLE

3 Years

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Developmental Milestones
  1. 2 Months
  2. 4 Months
  3. 6 Months
  4. 9 Months
  5. 12 Months
  6. 18 Months
  7. 2 Years
  8. 3 Years
  9. 4 Years
  10. 5 Years

Summary

The 3 year developmental milestones refer to a set of abilities that most children can perform at 3 years of age. In terms of motor abilities, 3 year olds can pedal tricycles and draw circles. Socially, 3 years olds often communicate with 3-word sentences. This is also the period when potty training starts, as children begin to develop bowel and bladder control. Finally, 3 year olds begin to engage in associative play, and begin forming their gender identity.

Key Points

  • 3 Years
    • Gross motor
      • Pedals tricycle
      • Jumps forward
      • Steps with alternating feet up and down stairs
    • Fine motor
      • Copies circle
      • Feeds self
    • Language
      • Sentences combining 3 words
        • Begins asking “Why?” questions
      • 200+ word vocabulary
    • Social/cognitive
      • Toilet Trained
        • Bowel control develops before bladder control
        • Daytime control develops before nighttime control
      • Gender identity
        • Identifies themselves as a boy or a girl, uses correct pronouns
      • Associative play
        • Children start interacting while playing, but aren’t usually working together
        • Example: kids riding tricycles together, paint on the same canvas but without a common goal
      • States own age