Use of discontinuous methods of data collection in behavioral intervention: guidelines for practitioners.

Over the past three decades, researchers have examined the sensitivity and accuracy of discontinuous data-collection methods. Momentary-time sampling (MTS) and partial-interval recording (PIR) have received particular attention in regards to their ability to estimate the occurrence of behavior and their sensitivity to behavior change compared to continuous data collection. In this article, we summarize these findings and provide recommendations for designing a discontinuous measurement system with consideration of the dimensions of behavior to be measured and the expected direction of behavior change.