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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

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Published on: July 4, 2013

The Aggression Observation Short Form identified episodes not reported on the Staff Observation Aggression

Jacob Hvidhjelm¹, Dorte Sestoft, Jakob Bue Bjørner

¹Mental Health Center Sct. Hans, Forensic Psychiatry Department, Boserupvej, Roskilde, Denmark.

Issues in Mental Health Nursing

|May 27, 2014

Summary

Standard aggression scales like the Staff Observation Aggression Scale-Revised (SOAS-R) significantly underreport patient violence. Shorter tools, such as the Aggression Observation Short Form (AOS), capture more incidents but cannot entirely eliminate underreporting.

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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress

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Assessment of Social Interaction Behaviors

Assessment of Social Interaction Behaviors

Published on: February 25, 2011

Area of Science:

Psychiatry
Clinical Psychology
Healthcare Quality Improvement

Background:

Accurate assessment of patient aggression is crucial for effective treatment and safety.
Existing instruments may have limitations in capturing the full spectrum of aggressive behaviors.

Purpose of the Study:

To compare the underreporting of violence and aggression between the Staff Observation Aggression Scale-Revised (SOAS-R) and the Aggression Observation Short Form (AOS).

Main Methods:

A one-year observational study across two open and two closed psychiatric wards.
Data collected using both the 22-item SOAS-R (post-episode) and the 3-item AOS (per shift).
Analysis of registered incidents, agreement between scales, and missing data rates.

Main Results:

The AOS registered significantly more incidents (1,281) than the SOAS-R (703).
Good agreement was found between the SOAS-R and AOS (kappa = 0.65).
Approximately 44% of aggressive episodes were underreported by the SOAS-R, with higher rates in open wards and for shorter admissions.

Conclusions:

Standard instruments like the SOAS-R substantially underreport aggressive episodes, missing over 45% of incidents.
Shorter assessment tools can reduce underreporting but do not eliminate it completely.
Improving aggression assessment requires considering instrument length and ward type.