Concept

Before Classical Conditioning

Before conditioning, an unconditioned stimulus (UCS) naturally elicits an unconditioned response (UCR), while a neutral stimulus (NS) does not elicit that response. For example, an illustration of this stage shows a dog salivating at the sight of food (UCS -> UCR), but not salivating when a bell is rung (NS -> No Response).

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Updated 2025-10-09

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