In which psychoanalytic stage did Freud say genuine love develops?

By pairing the ringing of a bell with the presentation of meat, Pavlov trained dogs to salivate to the sound of a bell even when no meat was presented. In this experiment, the presentation of the meat was the:

a. unconditioned stimulus. b. unconditioned response. c. conditioned stimulus. d. conditioned response.

The fact that a reward will increase the future likelihood of a response that produced it is known as:

a. the discrimination principle. b. the law of practice. c. the law of effect. d. the Premack principle.