 Compound schedules, welcome back. We've been talking about compound schedules. We've talked about them before. We'll probably talk about them again. We'll talk about them repeatedly. We'll talk about them with other things, which really makes them compound. Anyway, so compound schedules, the most basic one that you need to know about, is concurrent. Here's the easiest way to remember concurrent schedules. Ernstine really laid down the law using concurrent schedules. Matching law, that is. Sorry, behavioral analysis jokes. I'm sorry, folks, at home, my wife, I mean, as you might imagine, I do quite a few dad jokes. It gets really dirtier on the house when I do science-type dad jokes. And that's one of them. So I completely apologize, just to understand that this is what life is like at psych core. Just imagine dad jokes with a brain. So, no, with, I'm sorry, with science. Sorry, dad. Any other dad watching? I really didn't intend for that. See, you never know what's gonna come out here. Doesn't mean we're right. Maybe does. Anyway, no, concurrent schedules, it's really simple. It's a really cool procedure for studying choice. What is a concurrent schedule? There's a schedule over here, and there's a schedule over here. It doesn't necessarily, they can be this way, they can be this way, they can be this way. It doesn't really matter. The point is, is that you have two alternatives. They are different schedules. And the amount of time you spend on one schedule versus the other can be recorded. And when you record that, it happens to develop something. And we describe that in gross detail. Hernstein called it the generalized matching laws, what we can do to describe your behavior about what's going on with regard to your choices. So, concurrent schedules, it's literally, you've got an alternative. What are you gonna do? You got an FR5 and a VR10 or an FI5 and a VI7. I don't know, VR, VI, but that's, the point is that you just have a simple schedule and you're gonna compare it to another simple schedule and you're gonna see what the organism does. That's it, right? So if we happen to track all those details, what you end up with over time is the matching law and we can actually predict how much time people are going to spend on either alternative, depending on the amount of reinforcement that you earn for both. And when you match your amount of responding to the amount of reinforcement you get, we call that matching, right? And there's the fun generalized matching law. There's more to it than that. I promise we can get into mediation and maximization and over matching and under matching and all these crazy things that go with matching law, which we are going to save for another time. But just know that concurrent schedules are a common tool for studying choice. Metski. Thanks, Ernstine. Go!