_____ is the disappearance or weakening of a learned response following the removal or absence of the unconditioned stimulus (in classical conditioning) or the removal of a reinforcer (in operant conditioning).

When Pavlov stopped giving the dogs food after the real conditioned stimulus, they stopped salivating to the sound of the ticking. This is called

Without the _____, higher-order conditioning would be difficult to maintain and would gradually fade away.

A naturally occurring stimulus that leads to an involuntary (reflex) response is a(n)

In his classical conditioning experiment, Pavlov's dogs were conditioned to salivate when they

_____ pioneered the empirical study of the basic principles of classical conditioning.

_____ is the classical conditioning of a reflex response or emotion by watching the reaction of another person.

The response that is given to the conditioned stimulus is not usually quite as strong as the original unconditioned response

After a lengthy period during which the unconditioned stimulus was not applied, Pavlov's dogs stopped responding to the metronome. If a weaker conditioned response to the metronome occurred at some point after this, it would be a demonstration of