Related Experiment Video
Updated: May 21, 2026

The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
Published on: July 4, 2013
Quality of resident violence risk assessments in psychiatric emergency settings
Leslie Wong1, Andrew Morgan, Treena Wilkie
1Department of Psychiatry, University of Toronto, Ontario, Canada.
Objective:
To identify how psychiatric residents perceive their ability to conduct violence risk assessments and the risk factors they considered relevant in an emergency department setting.
Method:
We surveyed 55 of 159 psychiatric residents at the University of Toronto as to their experience and education in assessing suicide and violence risk. The residents, and a comparison group of 11 of 16 staff psychiatrists in the Law and Mental Health program at the Centre for Addiction and Mental Health, then participated in a mock interview with one of the authors. The subjects were directed to ask for all risk factors that would be relevant in determining the violence risk of a hypothetical patient with homicidal ideation. The risk factors they requested were compared with the risk factors found in the Historical, Clinical and Risk Management-20 (HCR-20) structured clinical judgment tool.
Results:
Psychiatric residents, on average, inquired about 6 fewer HCR-20 risk factors than staff psychiatrists (8.5, compared with 14.7). The number of HCR-20 items identified by residents correlated with several items; more risk factors were elicited by residents in a higher year of training, those who had received more formal and informal education, the number of patients for whom they had discharged a duty to warn, and the number of suicidal and violent patients they had previously assessed. Confidence at assessing violence risk was not correlated with performance.
Conclusions:
Psychiatric residents identify significantly fewer risk factors for violence than staff psychiatrists. Resident performance was correlated with increasing experience and education. It was not related to self-confidence in performing this task.
Related Concept Videos
Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
SBAR II: Application of SBAR
SBAR Report from a Nurse to a Health Care Provider
S: "Hello, Dr. Smith. This is Jane, RN, from the Med Surg unit. I am calling to tell you about Ms. White in Room 210, who is experiencing increased pain and redness at her incision site. Her recent...
Types of Reports III: Telephone and Verbal Reports
Here's an overview of each type:
Telephone Orders
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like asthma or COPD,...
Psychosurgery
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...

