 So about stimulus control now we've talked about it and in this case the example here the visual example is pretty clear You know the the the red light person thing there. That's a discriminative stimulus saying as long as you you know if you Stay in place you will be reinforced by avoiding getting run over by a car right or something to that effect In the green one says you'll be reinforced for crossing the street Okay, so you have two different stimuli Both of those are discriminative stimulus and they signal to you that a particular behavior will now be reinforced Not you know not all behaviors maintained by the exact same consequences, right? So in different situations and sometimes behavior isn't reinforced at all in those new situations or different situations So keep in mind we do have to talk about generalization and all these other things and we're gonna we're gonna get into that but the basic idea here is that Again, what maintains your behavior in one setting? Something else, baby may be maintaining it in a different setting, right? So reacting to I'm trying to think here Oh cigarette smoking can be a good one What is the signal for cigarette smoking in one environment, you know In one environment that the reinforcers for smoking the cigarette may be Escape from whatever task you're working on in another environment smoking a cigarette may be reinforced by Access to your friends, right? So the behavior is still the same smoking a cigarette the context has changed and the reinforcers have changed as well So let's get into the true definition here behavior that is reinforced in the presence of one stimulus and not in another Will come under stimulus control And so that's the definition behavior that is reinforced in the presence of one stimulus And not in another stimulus will come under stimulus control So in other words, you get reinforced for standing on the sidewalk in the presence of the red light And you do not get reinforced for walking across the street in the presence of the red light In the presence of the green light you get reinforced for walking across the street And you do not get reinforced for just waiting, right? Again, this is about The discriminative stimulus signaling that reinforcers are available So what happens in one particular context is not a guarantee that it'll happen in another context And more if you want to get into this like from a mathematical perspective stimulus control is simply the degree of correlation between a particular response And in a particular stimulus and so an sd is signaling that a particular behavior is going to be a good thing to do right now That's what we're talking about with stimulus control So if you start to think about your behaviors that are under stimulus control in the classroom and we'll talk about some of this But the idea is that you got a ton of behaviors that you do in the classroom that you don't do anywhere else That's because they're reinforced in the classroom only right and think about raising your hand Or listening to lecture those are things that you don't often do in other places, but In the classroom, they're perfectly acceptable and they're in fact, they're Required for the most part. So you do have that stimulus control going on crossing the street is stimulus control You know, and we can even talk about crossing the street without worrying about the lights, right? So, I mean think about it for a second. What's the one rule that you were always told growing up To do before you cross the street Is it look both ways right look one way look the other now by the way, there's a funny story about that And I'm gonna come back to that in a second, but um, so you look left and right and off you go So the looking left and looking right what you're identifying is Um, discriminative stimuli are there cars present if there's no cars present So the lack of stimuli there, right or the distance to those stimuli All right to the cars will signal if it's okay to cross or not So there's an example of stimulus control the funny story here is that looking left first then it's appropriate Then looking right is appropriate, but only if people drive on the right side of the road I learned that lesson the hard way the first time I was in South Africa Where they drive on the other side of the road and so what did I do? I went to cross the street and I looked left and I looked right and realized that I about stepped into traffic Because as soon as I looked left that there was no cars coming Well, that's because cars don't come from that direction when you step foot onto the street They're coming, you know, the lane that's closest to you. They're coming from the right side not from the left side So in other countries you actually have to look the other direction first, right? So what happened there was a case of generalization, right? Where my behavior of looking left and looking right to cross the street generalized But it failed, right? It was no reinforcer available for that. So My behavior came under stimulus control I started to discriminate and I learned that when in South Africa or Australia wherever it is that gone There are people drive on the right side of the road or on the left side of the road You then actually look the other direction first. So you look right first then you look left So right is the close lane to you. That's where the traffic is going to be coming from So it's a little backwards, but my behavior is now under stimulus control