Discuss cognitive advancements that occur during Piaget's preoperational stage as well as his

theorized limitations. Provide one example of how he assessed these limitations.

What will be an ideal response?

Piaget assumed that preoperational children show continued advancements in
representational thought, an ability that can be assessed via the observation of pretend
or sociodramatic play.  However, thinking is also limited during this stage, for example,
these children may be fooled by differences in appearance and reality. For example, the
child may become scared when they see their mother wearing a mask. In one series of
studies, Piaget demonstrated that preoperational children have conservation problems.
For example, the child, upon seeing a person spread out a row of coins, becomes
convinced that there are now more coins.