Intellectual Development of Infant

Intellectual Development of Infant

Remember that all infants are different and reach the various stages at different times. A child who walks or talks at a younger age than another child is not necessarily “better” or more advanced. All age ranges given are approximate.


  • Infants can focus on and follow moving objects with their eyes.
  • They cry in different ways to express hunger, anger, and pain.
  • They babble, coo, and gurgle.
  • They turn to locate the source of sounds.
  • They study their hands and feet.
  • They forget about objects that they cannot see.
  • They explore things with their mouth. They put anything they can hold into their mouth.


  • Infants make sounds like “dada” and “mama” (two-syllable sounds).
  • They repeat actions that cause a response. (For example, when given a rattle, they will shake it and laugh.)
  • They wave bye-bye and play pat-a-cake.
  • They look for things not in sight.
  • They begin to pretend by acting out familiar activities.
  • They respond to simple directions.
  • They make sounds that can be understood by people who know them well.
  • By 12 months, many infants speak their first understandable words.
Intellectual Development of Infant
Intellectual Development of Infant

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