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Your Baby Week Twenty Two (Five Months)

By Vincent Iannelli, M.D., About.com

Updated: January 2, 2008

About.com Health's Disease and Condition content is reviewed by Kate Grossman, MD

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Comparing Babies

Siblings often do things at different ages, so it is important not to worry over their development.

Children, including siblings, often do things, such as sitting up, talking, and walking, at different ages, so it is important not to worry and compare their development.

Photo © Vladimir Dmitriev

Is your baby growing and developing normally?

Despite reassurances from your pediatrician, you may sometimes feel like your baby is behind other babies if you try to compare him to every other baby you see.

For example, at four months, some babies are able to roll over and pull up to a sitting position, while others are just beginning to sit up with support and hold their head steady. And viewing the growth charts, you can see that the normal range for a four month old can be anywhere from 12 to 18 pounds.

Although all likely normal, babies with such large differences in their growth or development are not going to seem like they are the same age though if you put them next to each other.

That makes it important to try and not compare your baby's growth and development to that of other children. Of course, if you think that your child is not growing and developing normally, be sure to talk with your pediatrician.

Also be aware of the big ranges for when infants pick up the next big developmental milestones, such as:

  • talking in single syllables at 5 to 8 months
  • sitting up without support at 5 1/2 to 7 months
  • saying mama and dada at 6 to 9 months
  • picking up objects with a thumb and finger pincer grasp at 7 to 10 months
  • waving bye-bye at 7 to 14 months
  • saying mama and dada as specific words for their mother and father at 7 to 13 months
  • pulling up to a standing position at 8 to 10 months
  • standing alone at 10 to 14 months
  • walking at 11 to 15 months

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