 Whole interval recording, folks. It's a method for recording behavior. It's a really cool method for re-re-re-re-re-re-re-re. Whole interval, folks. It's a method for recording behavior. It's a really cool method for recording behavior, except for one flippant thing. It underestimates, and here's why. An interval, when we go into recording, you break up a large chunk of time into small chunks of time. So let's say an hour-long period. We're going to break it up into minute-long sessions. For our sake of the example, we'll do two minute-long sessions. OK, here we go. So we've got an hour. We're going to break it up into two minute intervals. Little Bobby is being naughty in the classroom. So the teacher wants you to find out how naughty is Bobby being. So you decide, being a not-so-smart behavior analyst, to use a whole interval recording procedure. And you say, all right, little Bobby. Is he doing his shit? And then if Little Bobby is doing his shit, you go, oh, he's got it for the first minute. He's been naughty. He's continuing to be naughty. He's continuing to be naughty. And if he's naughty for the whole two minute interval, you go, check, Bert. Yes, he was naughty. So you get the idea. If he's naughty for a minute and 58 seconds, then you don't put the check mark, which is weird, because he was naughty for a minute and 58 seconds. But you can't, because you're using whole interval method. So because it didn't meet the entire interval, you didn't check the box. It's for duration-type behavior, all right? So stuff that's recorded over a duration, not discreet trial-type stuff, it's pretty cool. But you've got to just know when to use it.