Detecting changes in simulated events II: Using variations of momentary time-sampling to measure changes in duration events

Regina A. Carroll, John T. Rapp, Amanda M. Colby-Dirksen, Ally M. Lindenberg

Research output: Contribution to journalArticle

9 Scopus citations


The extent to which a greater proportion of small behavior changes could be detected with momentary time-sampling (MTS) was evaluated by (a) combining various interval sizes of partial-interval recording (PIR) with 20 s, 30 s, 1 min MTS and (b) using variable interval sizes of MTS that were based on means of 20 s and 1 min. For each targeted percentage, low, moderate, and high inter-response times (IRTs) to event-run ratios were compared with reversal designs to determine whether sensitivity increased with either variation of MTS. The results showed that (a) combinations of 30 s and 1 min MTS/PIR yielded increased sensitivity over MTS alone; however, the increased sensitivity was offset by an increased probability of generating false positives and (b) variable-interval MTS produced comparable sensitivity to fixed-interval MTS. Thus, none of the methods increased detection of small behavior changes (decreased false negatives)without also increasing false positives.

Original languageEnglish (US)
Pages (from-to)137-155
Number of pages19
JournalBehavioral Interventions
Issue number3
StatePublished - Jul 1 2009


ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology
  • Arts and Humanities (miscellaneous)
  • Psychiatry and Mental health

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