Birth to 6 months
6 to 18 months
18 months - 3 years
4 to 6 years
6 to 12 years and 12 to 19 years
100

To feel safe and secure. 

Will cry when primary care giver leaves. 

100

Shows preference for routines or items.

Starts to be orderly, even compulsive at times. 

100

To accept nuture.

Make a lot of sounds. 

100

To decide to live, to be. 

The child will imitate others. 
100

Starts to give up beliefs about being the center of the universe.

Sometimes follows simple commands, sometimes resists. 

200

To learn to exert power to affect relationships. 

Starts learning about power relationships by watching and setting up power struggles. 

200

To signal needs; to trust others and self and continue forming secure bonds with parents.

Wants to explore on own but be able to touch base with caregiver at will. Needs to know caregiver is still there. 

200
To practice socially appropriate behavior.

Starts cooperative play. 

200

To express anger and other feelings. 

Tests behaviors: "No, I won't, and you can't make me." Tries out the use of tantrums. 

200

To bond emotionally, to learn to trust others.

Looks at and responds to faces, especially eyes. 

300

To communicate needs and wants more precisely. 

Starts using words during middle or latter part of stage. 

300

To discover effect on others and place in groups. 

Makes friendships, a preference to play with a particular peer. 

300

Integrate sexuality with identity, conversations, etc. 

Onset of puberty. 

300

Teaches object permanence, the concept that things still exist even when not visible.

Starts to play patty-cake and peek-a-boo.

300

To separate fantasy from reality.

Gathers information: how, why, when, how long, and so on. 

400

To learn skills, learn from mistakes, and decide to be adequate. 

Compares, tests, disagrees with, sets, breaks, and experiences consequences of rules. 

400

To establish ability to think for self. 

Begins cause and effect thinking, "If I touch that it will be hot."

400

To call for care and love. 

Cries or fusses to make needs known. 

400

To take more steps toward independence, mirroring adulthood. 

Sometimes independent (holding a job) and sometimes wanting to be fed and cared for. 

400

To emerge gradually, as a separate, independent person with own identity and values. 

Learning to solve complex problems and make decisions independently and accept outcomes; separate from other's opinions or suggestions. 

500

To accept touch. 

The child wants to cuddle. 

500

To check out family rules and learn about structures outside the family.

Belongs to same-gender groups or clubs. 

500

To test reality, to push against boundaries and other people. 

Starts to playing next to other children, but not with other children. 

500

To explore and experience the environment. 

Tastes, smells, touches EVERYTHING. 

500

To acquire information about the world, self, body, and gender roles. 

Tries on different identity roles by role-playing.