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Question
Jean Piaget observes that at 1 year and 2 months, his daughter Jacqueline holds in her hands an object which is new to her: a round, flat box which she turns all over, shakes, [and] rubs against the bassinet. She lets it go and tries to pick it up. But she only succeeds in touching it with her index finger, without grasping it. She nevertheless makes an attempt and presses on the edge. The box then tilts up and falls again. Jacqueline shows an interest in this result and studies the fallen box. Which of Piaget's six substages of sensorimotor development does this behavior reflect?
Jacqueline's behavior is characteristic of Piaget's tertiary circular reactions, novelty, and curiosity stage, which is the fifth sensorimotor substage. It develops between 12 and 18 months of age. In this substage, infants become intrigued by the many properties of objects and by the many things that they can make happen to objects. Tertiary circular reactions are schemes in which the infant purposely explores new possibilities with objects, continually doing new things to them and exploring the results. Piaget says that this stage marks the starting point for human curiosity and interest in novelty.
Answer
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