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Developmental milestones record - 9 months


Definition:

At 9 months, a typical infant will have certain skills and reach growth markers called milestones.

Alternative Names:

Growth milestones for children - 9 months; Childhood growth milestones - 9 months; Normal childhood growth milestones - 9 months

Information:

All children develop a little differently. If you are concerned about your child's development, talk to your child's health care provider.

PHYSICAL CHARACTERISTICS AND MOTOR SKILLS

A 9-month-old has usually reached the following milestones:

  • Gains weight at a slower rate, about 15 grams (half an ounce) per day, 1 pound per month
  • Increases in length by 1.5 centimeters (a little over one-half inch) per month
  • Bowel and bladder become more regular
  • Puts hands forward when the head is pointed to the ground (parachute reflex) to protect self from falling
  • Is able to crawl
  • Sits for long periods
  • Pulls self to standing position
  • Reaches for objects while sitting
  • Bangs objects together
  • Can grasp objects between the tip of the thumb and index finger
  • Feeds self with fingers
  • Throws or shakes objects

SENSORY AND COGNITIVE SKILLS

The 9-month-old typically:

  • Babbles
  • Has separation anxiety and may cling to parents
  • Is developing depth perception
  • Understands that objects continue to exist, even when they are not seen (object constancy)
  • Responds to simple commands
  • Responds to name
  • Understands the meaning of "no"
  • Imitates speech sounds
  • May be afraid of being left alone
  • Plays interactive games, such as peek-a-boo and pat-a-cake
  • Waves bye

PLAY

To help the 9-month-old develop:

  • Provide picture books.
  • Provide different stimuli by going to the mall to see people, or to the zoo to see animals.
  • Build vocabulary by reading and naming people and objects in the environment.
  • Teach hot and cold through play.
  • Provide large toys that can be pushed to encourage walking.
  • Sing songs together.
  • Avoid television time until age 2.
  • Try using a transition object to help decrease separation anxiety.
References:

Feigelman S. The first year. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF, eds. Nelson Textbook of Pediatrics. 19th ed. Philadelphia, PA: Elsevier Saunders; 2011:chap 8.


Review Date: 12/2/2014
Reviewed By: Sameer Patel, MD, MPH, Assistant Professor in Pediatrics, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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