Piaget Believed That by About 18 Months of Age, the Average

Multiple Choice

Piaget believed that by about 18 months of age, the average child began to have the ability to use and understand symbols. How did he feel this was demonstrated?

A) ​by the emerging use of language and gestures for communication
B) by the successful resolution of the Oedipus conflict
C) ​by demonstrating a significant reduction in both egocentrism and equilibration
D) ​by moving from crawling to walking independently