THE SECOND PIAGETIAN STAGE (2 to 7 YEARS)
•children begin to think symbolically and they use language
•children begin to represent the world with words, images and drawings
•use of language is not always as sophisticated, as it might seem
•unable to take the viewpoint of other one
•doesn’t realize that your views differ from his.
•
This stage lasts from approximately 2 to 7 years of age.
It is also known as. PRE-OPERATIONAL STAGE.
In this stage, children begin to think symbolically and they use language.
their thinking is still very intuitive.
children begin to represent the world with words, images and drawings.
They may tell you that teddy was naughty, spilt the drink and fully expect you to believe that because they would.

They make little use of reasoning and logic.
Symbolic thought goes beyond simple connections of sensory information and physical action. 
use of language is not always as sophisticated, as it might seem. For example, children tend to confuse words with objects they represent. Suppose the child calls a toy block a ‘scooter’ and makes a ‘bicycle’ with it, the child may be upset.
During this pre-operational stage, the child is also quite egocentric.
They are unable to take the viewpoint of other one.
However, although pre-school children can symbolically represent the world sometimes during this stage, children behave in an egocentric manner.
Why they seem exasperatingly selfish or uncooperative ?
Piaget believed that the child is not being selfish in the ordinary sense. He just doesn’t realize that your views differ from his.