A child is shown two identical balls of clay, sees one of them rolled into a rod shape, and is then asked which ball contains more clay. This child is being tested for an understanding of _____________?
Correct answer: B. conservation of substance
- A. object permanence
- B. conservation of substance
- C. the reversibility of actions
- D. logical possibilities
Explanation
The clay task tests conservation of substance: the amount remains the same despite a change in shape. This ability generally develops during Piaget’s concrete operational stage.
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