Which of the following is out of place among the others?

Question

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Thorndike's work led to the law of effect, in which a response followed by satisfying consequences becomes more probable whereas a response followed by dissatisfying consequences becomes less probable. Thorndike gathered information about learning from watching cats try to escape from puzzle boxes. According to his analysis learning is an association between stimuli in the situation and the response an animal learns to make.

Which of the Following Is Out of Place Among the Others