Whole-interval recording marks an interval only if the behavior occurs for the entire interval.
Example
With 10-second intervals, a learner stays on task for the full 10 seconds in one interval and for 6 seconds in another. Only the first interval is scored.
Key points
- It tends to underestimate how much behavior occurs.
- It is often used for behaviors you want to increase, such as staying on task.
- It gives an estimate, not an exact count.
Exam tip
The clue is “throughout” or “for the whole interval”. Partial-interval is “at any point”.
Common mistake
Scoring the interval when the behavior occurred for part of it. It must last the entire interval.
Quick check
Does whole-interval recording tend to over- or underestimate? Underestimate.
Keep studying
RBT glossary · Discontinuous measurement · Partial-interval recording · Momentary time sampling · Flashcards · Study guide
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