The Behavioral Observation System (BOS): A line staff assessment instrument of psychopathology

James P. Lepage, Neil L. Mogge

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


This study examined the initial reliability and validity of the Behavioral Observation System (BOS). The BOS, which consists of 34 items rating inpatient behaviors and is completed by psychiatric aids, was developed to assess the domains of Psychosis, Mania, Depression, and Behavioral Dyscontrol. Three studies are described. Results of the reliability study suggest adequate intraclass correlations and coefficient αs. Analyses of the interscale correlations demonstrated appropriate initial discrimination between the scales. A comparison of diagnoses with ratings yielded expected convergent validity. The overall results suggest the BOS is likely to provide reliable and useful information to treatment teams. Directions ot future studies also are discussed.

Original languageEnglish (US)
Pages (from-to)1435-1444
Number of pages10
JournalJournal of clinical psychology
Issue number12
StatePublished - 2001


  • Behavior assessment
  • Behavior ratings
  • Psychiatric population
  • Psychopathology

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Psychology


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