Mrs. Weston asks Colin if he wants his sandwich in one piece, or cut into two pieces. Colin asks her to keep it in one piece, because he isn't hungry enough to eat two pieces. Colin's answer suggests that he:
A)has not achieved object permanence.
B)does not understand reversibility.
C)does not yet understand conservation.
D)has mastered the concept of egocentrism.

Question

Quizplus · Accepted Answer

Colin's response indicates a lack of understanding of conservation. He believes that cutting the sandwich into two pieces changes the amount of food he has, rather than just changing the appearance. This is a common misunderstanding in children who have not mastered the concept of conservation.

Mrs Weston Asks Colin If He Wants His Sandwich in One