Question 1
Which characteristic of the concrete operational child's thinking allows him or her to solve Piaget's conservation problem?
◦ reversible mental operations
◦ hypothetical thinking
◦ egocentrism
◦ animism
Question 2
Which infant is using mental symbols?
◦ Eric, who is kicking his leg over and over
◦ Dan, who is squeezing different toys to see if they squeak
◦ Roger, who is climbing up on a chair to reach a toy on a shelf
◦ Peter, who is saying "Vrrrrroooommm!" and moving his hand like a car