Answer: Extinction; Functional communication training
Explanation: The extinction procedure applied by Theresa is a procedure by which a certain unwanted or problematic behaviour decreases and eventually stops when ignored, i.e the reinforcement for a certain behaviour decreases and gradually disappears in order to eliminate the problematic habits. Thus extinction is the cessation of previously learned behaviour for the simple reason that it is not amplified by reinforcement but ignored.
Max, on the other hand, uses the procedure of functional communication training, which means that the inappropriate behaviour is answered by an alternative choice, that is, to be warned that this behaviour is not good and should be changed by some alternative. Thus, such an answer has the same weight and meaning, intensity as reinforcement. After that, ignore occurs because the response is already sent.