Unconditioned response is the salivation response to the tone called.
A biologically powerful stimulus is combined with a previously neutral stimulus in a behavioural process known as classical conditioning. Unconscious learning occurs during classical conditioning. When you learn through classical conditioning, a predetermined stimulus is matched with an instinctive conditioned response. Thus, a behavior is produced.
For instance, you take your kid to the park to play whenever you return home wearing a baseball cap. As a result, anytime your child sees you arrive at home wearing a baseball cap, he becomes delighted because he associates it with going to the park. It is a form of classical conditioning to learn via association.
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