The "psychic secretions" that interfered with pavlov's experiments on digestion were:

a) primary reinforcers.

b) conditioned responses.

c) conditioned stimuli.

d) secondary reinforcers.

e) unconditioned responses.

The psychic secretions that interfered with pavlov's experiments on digestion were : B. Conditioned response

In pavlov experiment, he told a helper to bring food to his dog. After doing this for a prolonged period of time, the dog will be salivated everytime it see the helper, even without food. in this case, we can say that The dog's response already been conditioned.

Oh dog

The littoral zone. . .