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In Classical conditioning the conditioned stimulus, (CS) (or conditional stimulus or discriminative stimulus ), is an initially neutral stimulus that acquires the capacity to elicit a conditioned response as learning takes place.

The relationship between the conditioned stimulus and conditioned reponse is known as the conditioned reflex (or conditional reflex).

Conditioned stimuli are associated psychologically with conditions such as anticipation, satisfaction (both immediate and prolonged), and fear.

See alsoEdit

• Latent inhibition
• Preconditioning
• Secondary reinforcement
• Stimulation