In operant conditioning, initial learning (or the establishment of the behavior) occurs most rapidly if the response is reinforced ____________________. However, to maintain behavior, its best to shift to a _______________________ schedule of reinforcement. Question 17 options: on a fixed schedule for a certain number of responses; continuous on a continuous reinforcement schedule; partial on a fixed schedule after a certain amount of time; continuous on a schedule that varies around an average number of responses; on a schedule that varies around a fixed number of responses