Counterconditioning techniques were derived from principles first developed by

A) Ivan Pavlov.

B) Carl Rogers.

C) B. F. Skinner.

D) Sigmund Freud.

The answer is: A. Ivan Pavlov

Pavlov was the researcher who first popularized the classical conditioning (where a certain conditioned response is created by associating a certain situation with a conditioned stimulus)

Counterconditioning was developed in order to reverse or reduce the effete of classical conditioning (usually carried out by enforcing positive reinforcement to the subjects)