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Updated: May 2, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
What is known about dementia care recipient violence and aggression against caregivers?
Tracy C Wharton1, Bryan K Ford
1a Department of Psychiatry , University of Michigan Medical School , Ann Arbor , Michigan , USA.
Abstract:
Aggression is a known behavior in dementia, but there is little in the literature about risk to home-based caregivers in situations where severe aggression is present. This article examines this issue with a focus on what is known and where further research is needed. Rates of severe aggression by dementia care recipients against caregivers are estimated at greater than 20%, and may be the strongest predictor of nursing home placement. Measures containing both assessment of behavior and objective measures of caregiver trauma are needed, along with interventions aimed at educating and protecting caregivers while respecting communicative properties of behavior.
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