Momentary Time Sampling
MTS
In Plain Language
Checking whether behavior is occurring at specific moments.
ABA Definition
A discontinuous measure scoring presence or absence of behavior at predetermined instants, often the end of each interval.
Everyday Example
You check whether the dog is resting whenever a periodic timer sounds.
ABA Example
An observer records engagement at the exact scheduled check times.
How It May Be Used
Events between checks can be missed; this is an estimate, not total duration.