An event that one of Pavlov's dogs could see or hear but did not associate with food was called a(n)

A) secondary conditioner.
B) neutral stimulus.
C) discriminative response.
D) unconditioned stimulus.

Neutral Stimulus

A stimulus that initially produces no specific response other than focusing attention, until it is associated with an unconditioned stimulus.

Secondary Conditioner

A stimulus that becomes reinforcing through its association with a primary reinforcer.

Discriminative Response

A behavior that is specifically elicited by certain stimuli and not others, indicating the ability to differentiate between them.