Jean Piaget's Developmental Stage Theory Overview:Jean Piaget, a
Swiss biologist, believed that children developed cognition and
knowledge by progressing through a series of developmental
stages. Piaget hypothesized that each stage occured in a
sequential order, and that none of Key Terms (Driscoll et al,
wikipedia.org) Assimilation: Incorporating new logical
structures (or schema) into existing ones that we then apply to
the world around us. Accommodation: Modifying logical structures
or schema to better deal with the environment. Equalibriation:
The balance between the cognitive structures of assimilation and
accommodation in attaining knowledge, Egocentrism: The failure
to understand how someone else's point of view might be
different from their own. Piaget's research pointed to the fact
that egocentrisim was most prominent before the age of six or
seven. However, Piaget's later research, as well as that of
other researcher's, have hypothesized that egocentrism can arise
at any stage of development, but in