Classical conditioning
a form of learning based on the repeated association of two (or more) different stimuli; learning is only said to have occurred when a particular stimulus consistently produces a response that it did not previously produce.
Conditioned stimulus
the stimulus that is neutral at the start of classical conditioning and does not normally produce the unconditioned response but eventually becomes associated with the unconditioned stimulus.
Conditioned response (CR)
the learned or acquired behaviour to the conditioned stimulus.
Conditioning
a learning process through which stimuli and responses become associated with one another.
Learning
a relatively permanent change in behaviour due to experience
Stimulus
any event that produces a response from an organism
Unconditioned stimulus (UCS)
any stimulus that consistently produces and unconditioned response
Unconditioned response (UCR)
the response that occurs automatically as a result of the unconditioned response; reflexive, or involuntary, response is a UCR as it is predictably caused by the unconditioned stimulus