Kevin is enjoying a fine lunch in his high chair.He picks up a handful of spaghetti and stuffs it in his mouth.Next,he picks up two handfuls and shoves them in his ears.The next handful goes in his hair,and the one after that is casually thrown on the floor.As his motivation appears to be simply the novelty of each of these acts,Kevin's behavior would best be categorized as a

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Kevin's behavior is categorized as a tertiary circular reaction because he is experimenting with different ways to interact with his environment for the sake of novelty and curiosity, rather than seeking a specific outcome or goal. A primary circular reaction involves repeating a pleasing or interesting action with one's own body, while a secondary circular reaction involves repeating an action with external objects. The beginning of thought refers to the development of mental representations and problem-solving abilities.

Kevin Is Enjoying a Fine Lunch in His High Chair