Which of the following is the best way to describe ratio...

Which of the following is the best way to describe ratio strain? A Reinforcement is given at such a high rate that it stops working. B Reinforcement is thinned too quickly and the behavior diminishes or disappears. C Reinforcement is thinned too quickly and the behavior increases significantly. D Reinforcement is delayed too long resulting in the display of inappropriate behavior.

Transcript

00:01 This question asks, a rat is trained to press a lever to obtain food under a fixed interval schedule.

00:05 Which are the following behaviors with the rat most likely exhibit? pressing the lever continuously whenever it is hungry.

00:11 Pressing the lever exactly once in waiting for the food pellet before pressing it again.

00:15 Pressing the lever slowly at first but with an increasing frequency as the end of the interval approaches, or none of the above the association formed by fixed interval schedules is too weak to increase behavior.

00:24 So when we talk about a fixed interval schedule, we are referring to the four schedule.

00:30 Of reinforcement.

00:38 And that would be the fixed interval schedule, the fixed ratio schedule, the variable interval schedule, and the variable ratio schedule.

00:51 And with these four schedules of reinforcement, we are simply referring to the different ways in which we could present a reinforcer to our subject to elicit an increase in behavior.

01:10 So with the fixed interval schedule we are talking about the rat pressing the lever then it will receive the food.

01:30 So a food pellet comes out.

01:34 But the catch is that the next food pellet will come out only after this fixed time interval passes.

01:43 So the next pellet is only going to come out as after the time interval is over.

01:58 It's kind of like a refractory period.

02:01 There's this period of time where no matter how many times you press the lever, nothing is going to happen until that time runs out.

02:07 And then the pellet will only come out if the lever is pressed.

02:14 So it's not like it's going to automatically come out after the time is over, but instead the rat has to press the lever first, obtain the food pellet, then it will either press the lever once or however many times during that interval.

02:31 And then once the time passes, now the rat, of course, doesn't keep track of the time.

02:35 But over the course of training, it will start to develop this and we'll see what it will develop in just a moment here...

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