Jay complains to his father that he wants more juice. His father takes the juice Jay has in his glass and pours it into a taller but narrower glass. Jay is now content that he has more juice. Jay has apparently failed to develop:
A)object permanence
B)a theory of mind
C)formal operations
D)conservation

Question

Quizplus · Accepted Answer

Jay's contentment after his juice is poured into a taller, narrower glass indicates a failure to understand conservation, which is the concept that quantity remains the same despite changes in shape or appearance. This is a cognitive development milestone typically mastered during the concrete operational stage of Piaget's theory of cognitive development.

Jay Complains to His Father That He Wants More Juice