Correspondence between outcomes of brief and extended functional analyses

Sung Woo Kahng, Brian A. Iwata

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


We compared results obtained from 50 sets of functional analysis data from assessments of self-injurious behavior (SIB), 35 of which showed clear response patterns and 15 of which were undifferentiated, with those obtained from two abbreviated methods of assessment: (a) a brief functional analysis, consisting of the first session of each condition from the full functional analysis, and (b) a within-session analysis, in which data from the brief analysis were regraphed to show minute-by-minute changes in response rates during a session. Results indicated that outcomes of the brief and within-session analyses corresponded with those of the full functional analyses in 66.0% and 68.0% of the cases, respectively. Further examination of results indicated a tendency for the brief analysis to identify a large proportion of positive cases (both true and false positives) and for the within-session analysis to identify a large proportion of negative cases (true and false negatives).

Original languageEnglish (US)
Pages (from-to)149-160
Number of pages12
JournalJournal of applied behavior analysis
Issue number2
StatePublished - 1999
Externally publishedYes


  • Aggression
  • Functional analysis
  • Self-injurious behavior

ASJC Scopus subject areas

  • Philosophy
  • Sociology and Political Science
  • Applied Psychology


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