According to Piaget, children begin to develop concepts and the ability to think in terms of abstractions in the __________ stage

Schemas can represent ________ in semantic memory and ________ in episodic memory.

A. models, beliefs. B. concepts, events. C. imagination, pictorial vision. D. events, concepts.

Seven-year-old Adriana ran in from school and shouted, "Hey, Mom did you know that 2+3 is the same as 3+2?" Adriana is demonstrating

a. centration. c. reversibility. b. decentering. d. conservation.