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Child Development

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There are many milestones in an infant’s physical, emotional and learning development during the eight to twelve month period. Each baby is an individual, and developmental milestones should not be compared. Babies can reach milestones early or late.

Physical Milestones of an Eight to Twelve Month Old Infant

  • Infants will be able to sit alone without support.
  • Infants can bang on tables or other surfaces with an object.
  • Infants will start crawling, either with their abdomen on, or off, of the floor.
  • Infants will learn to pull themselves up to a standing position, and eventually stand alone.
  • Infants will learn how to change positions, such as going from lying to sitting.
  • Infants can learn to drink from a cup.

Learning Milestones of an Eight to Twelve Month Old Infant

  • Infants in this age group will begin to make vowel and consonant cooing sounds.
  • Infants may start shouting to get their caregiver’s attention.
  • Older infants may say one syllable words, or a combination of the same syllable, such as “mama” or “dada.”
  • Infants will imitate actions they see, such as holding a spoon or playing with a toy.
  • Infants in this age group may be curious about a toy that is being hidden and start looking for it.
  • Infants will drop things on purpose to see it fall.

Emotional Milestones of an Eight to Twelve Month Old Infant

  • Infants in this age group will start to show fear around individuals they are unfamiliar with.
  • Infants in this age group tend to cry and appear scared when parents leave them with another caregiver.
  • Infants in this age group will laugh more frequently, and show a desire to make parents happy.
  • Infants in this age group may resist going to bed and display their anger when they are unhappy.
  • Infants in this age group may cry when scolded.
  • Infants in this age group will repeat a caregiver’s action during play.

When to Contact a Pediatrician

Contact your child’s pediatrician if your child is showing any of the following signs or conditions:

  • Infant does not seem able to differentiate between family and strangers.
  • Infant does not babble or put together syllables by ten months of age.
  • Infant does not reach out to grasp objects he or she is offered.
  • Infant is unable to stand when he or she is ten months of age.

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