Evaluation of the accuracy, reliability, efficiency, and acceptability of fast forwarding to score problem behavior

Mychal A. Machado, Kevin C. Luczynski, Stephanie A. Hood

Research output: Contribution to journalArticle


Technological advances have allowed professionals to obtain extended recordings of caregiver–client interactions in natural settings, but scoring recorded video at normal speed to identify instances of low-rate problem behavior is impractical in terms of scoring time. Fast forwarding is a continuous measurement system in which all seconds of an observation are viewed at a speed faster than normal. In Study 1, we evaluated whether three groups of five observers could discriminate problem behavior at three fast-forwarding speeds across 10-min observations. We analyzed the efficiency of using fast forwarding compared to continuous scoring, and interobserver agreement across the fast-forwarding speeds. In Study 2, we compared the accuracy, efficiency, and social acceptability of fast forwarding (3.5x) and momentary time sampling (3.5 s) across 90-min observations. Results support the use of 3.5x fast forwarding as a viable measurement system of improving the practicality of scoring problem behavior from video.

Original languageEnglish (US)
Pages (from-to)315-334
Number of pages20
JournalJournal of applied behavior analysis
Issue number1
StatePublished - Dec 1 2019



  • data collection
  • direct observation
  • fast forwarding
  • measurement
  • momentary time sampling

ASJC Scopus subject areas

  • Philosophy
  • Applied Psychology
  • Sociology and Political Science

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