| Behavior | Stage | Theorists |
|---|
| Pleasure from sucking, chewing, swallowing, reliant on others. | |
| Typically from birth to age two, a child reacting emotionally to peek a boo. | |
| Boys play with boys, girls play with girls. No interest in opposite sex. | |
| From age seven to eleven, children gain a better understanding of mental operations but have difficulty understanding abstract or hypothetical concepts. | |
| Teens needs to develop a sense of self and personal identity. | |
| Young adults need to form intimate, loving relationships with other people. | |
| Childhood stage that may lead men and women to become flirtatious or promiscuous in the future. | |
| Stage where a sense of responsibility and mature sexuality develop. | |
| | Behavior | Stage | Theorists |
|---|
| Occurs between ages two and six. Language development is one of the hallmarks of this period. | |
| Children develop a sense of trust when parents provide reliabilty, care, and affection. Lack of those lead to mistrust. | |
| Learn and regulate potty training, could lead to self destructive life or temper tantrums. | |
| age twelve to and lasts into adulthood. During this time, people develop the ability to think about abstract concepts. | |
| Children need to develop a sense of personal control over physical skills and a sense of independence. Sucess leads to independence, failure leads to dependence. | |
| Children need to begin asserting control and power over the environment. Success in this stage leads to a sense of purpose. Failure leads to guilt. | |
| As we grow older and become senior citizens, we tend to slow down our productivity, and explore the meaning of our life. | |
|
Periodic Table 
The Nine Planets 
Digits of Pi
