The reliability and validity of the Chinese version of the Modified Overt Aggression Scale

Hui Chun Huang, Yu Ting Wang, Kao Ching Chen, Tzung Lieh Yeh, I. Hui Lee, Po See Chen, Yen Kuang Yang, Ru Band Lu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Objective. Instruments to assess aggressive behaviors in the psychiatric ward are crucial for monitoring risky behaviors. The purpose of this study was to assess the validity and reliability of the Chinese version of the Modified Overt Aggression Scale (MOAS). Methods. We translated the English version of MOAS into Chinese. We interviewed and trained two volunteers to act as agitated patients in the seclusion room. One senior psychiatrist, experienced in using the MOAS, directed scenarios of different aggressive intensity and established the standard scores. The validity was assessed by comparing the other raters' scores with those of the director's. Inter-rater reliability was also assessed. Results. Inter-rater reliability, based on Intra-class correlation coefficient (ICC=0.94, P<0.001) and Kendall's W coefficient of concordance (W=0.83, P= 0.001), was high. The validity was assessed by the MannWhitney test. The results showed that the raters adequately differentiated (z=- 2.89, P= 0.002) between the above-average and below-average scores of the MOAS. Conclusion. The Chinese version of the MOAS has modest psychometric properties. The model, which used trained volunteers acting as patients and compared their scores with those of the director, may be used in further studies for developing psychometric instruments to assess abrupt behaviors.

Original languageEnglish
Pages (from-to)303-306
Number of pages4
JournalInternational Journal of Psychiatry in Clinical Practice
Volume13
Issue number4
DOIs
Publication statusPublished - 2009 Nov 11

All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health

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