As your baby grows, she will demonstrate physical and mental milestones that are a result of brain growth and development. Following are some key milestones you can expect to see.

Your baby's stages of brain development will probably follow a fairly predictable schedule. She may reach milestones quite a bit earlier or later than other babies—and even her siblings—and still be considered completely normal. If you're concerned about your baby's development, talk to her doctor.

Brain and Growth Development Timeline

Major Newborn Milestones

As a newborn, your child's brain is growing at a rapid pace, helping her process all the new sights and sounds she encounters.

At 1 month, your baby may:

  • Try to lift their head off the ground when lying on their tummy
  • Stop crying when picked up and talked to

At 2 months, your baby may:

  • Make first smile, responsively
  • Vocalize, gurgle and coo
  • Follow objects with their eyes that move across her line of vision
  • Become aware of her own fingers
  • Hold their head off the ground for a few seconds

At 3 months, your baby may:

  • Hold up her head for a few minutes when propped sitting up
  • Visually track an object moving slowly across the room
  • Use a variety of sounds and gestures as "conversation"

Major Infant Milestones

At 4 months, your baby may:

  • Shake a rattle to make a noise
  • Start to roll from front to back

At 5 months, your baby may:

  • Acquire head control and hold her head upright, although still a bit wobbly
  • Grab her toes and pull them to mouth
  • Smile at her own face in the mirror

At 6 months, your baby may:

  • Sit with support
  • Listen closely when hearing her own name
  • Try to roll over in both directions
  • Act shy with strangers and exhibit fear

At 7 months, your baby may:

  • Hold a spoon
  • Support herself in the crawling position
  • Hold a two-handled cup and drink from it

At 8 months, your baby may:

  • Start to pick up objects using thumb and forefinger (pincer grasp)
  • Pass an object from one hand to the other frequently
  • Begin to understand the meaning of words, particularly "no"

Major Toddler Milestones

Your child's brain is still growing at a furious pace in the toddler years. As she moves through different stages of brain development, you can expect her to make great strides developing her cognitive, motor, social and communication skills.

At 9 months, your child may:

  • Begin to pull herself up to stand
  • Search for a hidden object
  • Hold a string and pull a toy

At 10 months, your child may:

  • Communicate with gestures
  • Wave goodbye
  • Bang objects together
  • Hold arms out to show she wants to be picked up

At 11 months, your child may:

  • Sit down from standing
  • Cruise (walking by holding on to furniture and other objects)
  • Pass objects pack and forth between hands easily

At 12 months, your child may:

  • Stand without support
  • Put objects into a container
  • Say a couple of words

Between the ages of 1 and 2, your child may:

  • Start to walk unaided (usually 11-18 months)
  • Start to crawl upstairs (12-15 months)
  • Begin feeding herself with spoon (15-18 months)
  • Assist with dressing herself (15 months)
  • Know 4-6 words (15 months)
  • Make some animal sounds (15 months)
  • Begin having tantrums (15-18 months)
  • Be able to play alone for short periods (18 months)
  • Know certain body parts (18 months)
  • Start to show hand preference (18 months)
  • Enjoy helping with household tasks (18 months)
  • Climb into a chair to sit (18 months)
  • Point to and name objects (18 months)
  • Resist sharing toys (2 years)
  • Be able to run (2 years)