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Choosing a Violence Risk Assessment Tool: What Forensic Psychologists Need to Know


Forensic Scholars Today

What is the most accurate violence risk assessment tool on the market today? This is a question
asked every day by mental health, correctional, and legal professionals working across the globe. It is
particularly the case in the United States, where surveys have estimated that more than 80% of forensic
psychologists use a structured instrument when conducting risk assessments. But there are more than
400 risk assessment tools currently being used on six continents—all claiming to produce the highest
rates of validity and reliability.

Recent large-scale research has concluded that a single risk assessment tool that consistently
predicts future incidents of violence better than all others does not exist. Indeed, the risk assessment tool
that will be most accurate for a particular forensic psychologist is not the one with the best marketing
campaign or even the one with the most studies published on it. Rather, the risk assessment tool should
be evaluated on whether it is well-designed and user friendly. When deciding upon which violence risk
assessment tool to adopt in practice, there are three key factors to take into consideration.

Compare the average patient to the sample on which the risk assessment tool was normed, taking into consideration age (child, adolescent, adult), sex, race and ethnicity, nationality, offense history, and diagnostic group. For example, if an instrument was developed in a rural area of Canada on a predominantly Caucasian sample of men with an unclear diagnostic background, that risk assessment tool will likely not perform to its maximum ability in a unit serving predominantly minority female patients in downtown Chicago.

Compare the setting in which you are evaluating the average patient with the setting in which the normative sample was assessed. For example, if an instrument was developed using a group of patients evaluated upon admission to a forensic psychiatric facility, that risk assessment tool will likely not perform to its maximum ability when used by a parole board to make release decisions.

Compare the outcome for which a risk assessment tool was designed with the prediction outcome of interest. For example, if an instrument was developed to evaluate the risk of general recidivism, thatrisk assessment tool will likely not perform to its maximum ability when used to predict sexual recidivism specifically. Make sure to pay particularly close attention to the operational definition of the outcome in the risk assessment tool’s manual—instruments differ in terms of whether new arrests, charges, convictions, incarcerations, and self-reports of offending are included. Furthermore, some risk assessment tools were developed to predict intra institutional infractions, whereas others were developed to predict misconduct in the community.

Author Biographies:

Jerrod Brown, M.A., M.S., M.S., M.S., is the treatment director for Pathways Counseling Center, Inc. Pathways provides programs and services benefiting individuals impacted by mental illness and addictions. Jerrod is also the founder and CEO of the American Institute for the Advancement of Forensic Studies (AIAFS) and the lead developer and program director of an online graduate degree program in forensic mental health from Concordia University, St. Paul, Minnesota.

Jay P. Singh, Ph.D., is the founder of the Global Institute of Forensic Research, specializing in providing cutting-edge research, training, and software solutions to mental health, correctional, and legal professionals working in both general care and forensic settings around the world.