 Jara, thank you for your question. What's the difference between a DRA and a DRO? Well, I'm going to be a little bit salty with you and go, are you talking about a DRO or a DR0? I don't really know because I can't discriminate the way YouTube puts the little circle up there. So I'm going to assume you meant a DR0. Well, a DR0 is simple. You're only going to reinforce the organism when they fail to engage in a particular response over a particular period of time. In other words, they have not engaged in a particular response. We're going to give you a reinforcer for it. Well, that sounds a little bit weird, doesn't it? Isn't it kind of odd, which is why we use DRO for other? Because you can't reinforce no behavior. I suppose you can reinforce behavior at a particularly extremely low rate, which is that zero thing. But anyway, so if you just go DRO, so we're going to differentially reinforce you as long as you engage in any behavior other than the one that we don't want you to do for a particular period of time. So in other words, we're going to reinforce you for doing a whole bunch of other stuff. Whatever that stuff is. So DRO, DRA is a very similar and related concept. So we're going to reinforce you as long as you engage in alternative responses other than the one that we don't want you to do. Sounds really similar, right? Because they are. The fact that you're having trouble discriminating between the two probably means that you understand them both, which is a very challenging concept to express. And it's something that happens quite frankly, frequently in this field. And the man behind the camera is walking in circles because he believes I've tucked myself into a circle, and he's probably not wrong. So no, an alternative response is just that. So engage in a particular, as long as I'm going to get, as long as I'm looking at you and you engage in some response that is not the response that I'm after, then I'm going to reinforce you. That's alternative. But a DRO functionally meets that. So then DRO is really what we're about. So we're talking about over a particular period of time, no responses that are that one, which is just a special case of DRA. Think about that one for a while. DR0 is just a special case of DRA. Maybe, I don't know. Other people will probably disagree with me, but that's the way it is in my head. And hopefully now it's that way in your head. So for now, see if it gets you past the exam. Ah! Thank you enough for making it to the end of the video. No one watches to the end except you. And for that, I appreciate it. Thank you very much. Please like, subscribe, share, even donate maybe. Anything. Just watch more videos.