Measuring Development MilestonesFrom birth to telling jokes in five short years.

The first five years of human development are the breathtaking, key moments to lay the foundation for success in life as an individual, and as a contributor to society.

Consider that at birth, the brain is a quarter the size of an average adult’s; three years later, the brain is 90 percent the size of an average adult’s. What happens during this period of rapid brain growth is the foundation for all that follows.

While every person develops at their own pace, there are some common milestones along the way.

From 0-5 at a glance:

In the first 12 months, children learn to:

  • Grasp objects
  • Roll over, crawl and walk
  • Point at people and things
  • Imitate sounds made by adults
  • Babble, coo and begin using first words

Measuring Development Milestones

In months 12-18:

  • Play peek-a-boo
  • Enjoy stories
  • Manipulate toys
  • Follow simple directions

In months 18-24:

  • Correctly use two-word phrases
  • Play simple games
  • Drink from a cup

In the second year:

  • “Read” picture books, naming people and objects in them
  • Climb stairs
  • Assert themselves by saying “No”

At age 3:

  • Sing songs
  • Recite nursery rhymes
  • Play make-believe

Measuring Development Milestones2

At age 4:

  • Uses a vocabulary of 1,500 words
  • Speaks in sentences
  • Understands number and space concepts
  • Begins developing logical thinking
  • Cooperates with others

At 5, a child:

  • Speaks fluently, correctly using plurals, pronouns, tenses
  • Seeks knowledge
  • Knows right from wrong
  • Makes up riddles and tells simple jokes