2.  A relatively permanent change in behavior caused by experience.  Classical Conditioning ▪ A type of learning in which a stimulus gains the power to cause a response. ▪ The stimulus predicts another stimulus that already produces that response ▪ Form of learning by association

3.  Stimulus - anything in the environment that one can respond to.  Response – any behavior or action.  An unconditioned stimulus (UCS) automatically triggers a response  An unconditioned response (UCR) is one that happens automatically as a result of the UCS

4.  A Conditioned Stimulus (CS) is a previously neutral stimulus that, through learning, gains the power to cause a response.  The CS must be a neutral stimulus before conditioning occurs.  A Conditioned Response (CR) is the response to the conditioned stimulus and is usually the same behavior as the UCR.

5.  Acquisition  The process of developing a learned response.  The subject learns a new response (CR) to a previously neutral stimulus (CS)  Extinction  In classical conditioning, the diminishing of a learned response after repeated presentation of the conditioned stimulus alone.  In classical conditioning, the continual presentation of the CS without the UCS

6.  The reappearance of the conditioned response after a rest period or a period of lessened response.  If the CS and UCS are no longer associated extinction will occur very rapidly after spontaneous recovery.  This proves that extinction is not the same thing as unlearning.