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Developmental Milestones

  • By: Kimberly A. DeRuyck
  • In: Encyclopedia of School Psychology
  • Edited by: Steven W. Lee
  • Subject:School/Educational Psychology (general), School Psychology, Educational Psychology

Developmental milestones are important, measurable indicators of an individual's growth that are evaluated based upon age. Each milestone is associated with a specific age and indicates typical development, although the age at which a typically developing child reaches each of these milestones may vary considerably. The variability in the age that children reach these milestones results from the interaction between genetic and environmental factors. These developmental indicators are commonly used among infants and young children to assess their growth in a variety of areas. Examples of developmental milestones include children's first steps and words. Parents and professionals may observe these developmental areas to assess for delays, or reaching a milestone at a later-than-expected age. Delays in any area may affect future developmental capabilities, depending ...

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