A time-sampling data collection method used to estimate the overall occurrence of a behavior by measuring the number of intervals during which the behavior occurs at the end of an interval. 

5th Edition Task List

C-7  Design and implement sampling procedures (i.e., interval recording, time sampling).

6th Edition TCO

C.6 Design and apply discontinuous measurement procedures (e.g., interval recording, time sampling).

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Dana Do's: What's the Difference Between Continuous and Discontinuous Measurement?

It’s all too easy to mix up continuous and discontinuous measurement procedures. Need some help discriminating between the two? Get clarity with help from PTB founder Dana Meller.