Behavior governed by reflexes; Develop our first schematas through our senses.

Babies at first do not realize that objects continue to exist even when they are out of sensory range.

Beginnings of language acquisition, refer to world using symbols

Realization that properties of objects remain the same even when their shapes change

Children learn to think more logically about complex relationships of objects

Abstract reasoning; being able to manipulate objects and contrast ideas in our mind without physically seeing them.

The ability to think about the way we think; we can trace our thought process and evaluate the effectiveness of how we solved a problem