Classical conditioning involves an unconditioned stimulus that naturally elicits an unconditioned response. A neutral stimulus is paired with the unconditioned stimulus and becomes a conditioned stimulus that can elicit a learned conditioned response, even when presented alone. Key elements are the unconditioned stimulus and response, neutral stimulus that becomes the conditioned stimulus, and the conditioned response that is learned.

1. Elements of Classical Conditioning learning
 Unconditioned Stimulus (UCS)
in classical conditioning, a naturally occurring stimulus
that leads to an involuntary and unlearned response.
 Unconditioned Response (UCR)
In classical conditioning, an involuntary and unlearned
response to a naturally occurring or unconditioned
stimulus.
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2. Elements of
Classical Conditioning…
 Neutral Stimulus (NS)
In classical conditioning, a stimulus that has no effect on the
desired response prior to conditioning.
 Conditioned Stimulus (CS)
In classical conditioning, a previously neutral stimulus that
becomes able to produce a conditioned response, after pairing
with an unconditioned stimulus.
 conditioned response (CR)
In classical conditioning, a learned response to a conditioned
stimulus.
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