 Response maintenance. This is where your response maintains past the time with which it's been trained. But kind of continues to train. These videos are a classic example of response maintenance. Why you might ask? Because Dr. Brigham and Dr. Cleathus and Dr. all sorts of doctors. A lot of people taught me these things. This is Dr. McSweeney, sorry friend. So all these people taught me these wonderful things about behavior analysis and my responses are maintaining long past being out of their instructive classrooms. So the response maintains past the time that the intervention is over, if you will. So how long does the person keep maintaining their ability to communicate functionally? Do they do that for six months after you taught them? Do they have taught them some FCT? Or do they do it for four minutes? Because it's all maintenance, but it's about how long does that behavior maintain for, right? So that's what we're talking about when we talk about response maintenance. How long does it continue? Did you put them in touch with the natural contingencies? If so, then the response is going to maintain. It's that simple. Jeez, tired of beating around a bush here.