Developmental milestones record - 9 months
At 9 months, a typical infant will have certain skills and reach growth markers called milestones.
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 most often reached the following milestones:
- Gains weight at a slower rate, about 15 grams (half an ounce) per day, 1 pound (450 grams) 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:
- 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 goodbye
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.
Neil K. Kaneshiro, MD, MHA, Clinical Professor of Pediatrics, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
This information should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. © 1997- 2007 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.