What is the difference between risk assessment and threat assessment?

Risk assessment is a broader clinical and forensic evaluation of an individual's likelihood of engaging in violent behavior over a specified time period, typically based on historical, clinical, and contextual factors. It is used in settings like civil commitment, parole decisions, and forensic hospitalization. Threat assessment is a more targeted evaluation triggered by a specific communicated or observed threat, typically in workplace, school, or public figure protection contexts. Threat assessment focuses on whether a specific individual poses a threat to a specific target in a specific context. Both require specialized training, but the methodology, tools, and referral questions differ. This page focuses on violence risk assessment in clinical and forensic contexts.

Should I provide a probability estimate for future violence?

No. Providing a specific probability estimate (e.g., 'there is a 30% chance this individual will be violent') is not supported by current science and is ethically problematic. Violence risk assessment instruments can classify individuals into risk categories (low, moderate, high) relative to a reference group, but they cannot generate reliable individualized probability estimates. Best practice, consistent with structured professional judgment approaches like the HCR-20V3, is to communicate risk in terms of categories (low, moderate, high), specify the nature, severity, imminence, frequency, and likelihood of potential violence, identify risk and protective factors, and recommend risk management strategies. Avoid numerical probabilities.

Can I use actuarial instruments alone for violence risk assessment?

Actuarial instruments like the VRAG-R or Static-99R provide empirically derived risk classifications based on static (largely unchangeable) risk factors. They are useful as one component of a comprehensive assessment, but they have significant limitations when used alone: they cannot account for dynamic (changeable) risk factors, they were developed on specific populations and may not generalize, they do not assess protective factors, and they do not inform risk management strategies. Current best practice is structured professional judgment (SPJ), which uses validated risk factor frameworks (like the HCR-20V3) to guide systematic clinical assessment and integrates actuarial data with dynamic factors, protective factors, and case-specific considerations.

What is the legal standard for civil commitment based on dangerousness?

Civil commitment standards vary by state but generally require the individual to have a mental illness or serious mental disorder AND to pose a danger to themselves or others (or, in some states, to be gravely disabled). The standard for 'danger to others' is typically defined as a 'substantial risk' or 'significant risk' of serious physical harm to another person in the near future. Your violence risk assessment informs this legal determination but does not make it — the court or hearing officer makes the ultimate decision. Frame your findings in terms of the specific legal standard of the jurisdiction where the proceeding is taking place.

How do I assess violence risk when the individual is uncooperative or refuses to participate?

You can still conduct a meaningful risk assessment using available data. Review all available records (psychiatric records, criminal history, prior violence risk assessments, incident reports, police reports, institutional records), conduct collateral interviews with treaters, family members, correctional staff, or probation officers, and apply structured risk assessment tools using file-based coding (the HCR-20V3, for example, can be coded from file review when direct interview is not possible). Document that the individual was offered the opportunity to participate, that they declined, and that your opinions are based on the available data. Acknowledge any limitations resulting from the individual's non-participation.

Violence Risk Assessment Report

Forensic & Legal|16 min read|Updated 2026-03-20|Clinically reviewed

What Is a Violence Risk Assessment Report?

A violence risk assessment report is a forensic document that systematically evaluates an individual's risk for engaging in violent behavior. It identifies historical, clinical, and contextual risk factors; assesses protective factors; classifies the level of risk; specifies the nature and severity of potential violence; and recommends risk management strategies. These reports are used in civil commitment proceedings, parole and probation decisions, forensic psychiatric discharge planning, threat management, and other legal and clinical contexts where violence potential must be evaluated.

Violence risk assessment has evolved significantly over the past three decades, moving from unstructured clinical prediction (which research consistently shows performs only slightly better than chance) to structured approaches that substantially improve accuracy and consistency. The current standard of practice is structured professional judgment (SPJ), which uses empirically validated risk factor frameworks to guide systematic clinical assessment while preserving the clinician's ability to integrate case-specific information.

It is critical to understand that violence risk assessment does not predict violence. No instrument or clinician can predict with certainty whether a specific individual will be violent. Risk assessment identifies the presence and relevance of factors empirically associated with violence and classifies the individual's risk level relative to those factors. Your report should communicate risk in a way that is actionable for decision-makers without overstating the precision of your assessment.

When You Need It

Civil commitment hearings where the state must demonstrate that a person with mental illness poses a danger to others
Forensic psychiatric hospital discharge planning and conditional release evaluations
Parole and probation hearings requiring assessment of violence recidivism risk
Sexually violent predator (SVP) commitment proceedings
Not guilty by reason of insanity (NGRI) disposition hearings
Threat assessment referrals from workplaces, schools, or law enforcement
Court-ordered evaluations in criminal sentencing involving violence risk
Duty to protect/warn analysis when a client makes threats against identifiable third parties
Risk management planning in inpatient psychiatric facilities
Judicial waiver or transfer hearings for juveniles charged with violent offenses

Key Components

Referral Context and Psycholegal Question

State who requested the evaluation, the specific psycholegal question (e.g., "Does Mr. X pose a substantial risk of physical harm to others such that continued involuntary commitment is warranted?"), and the legal standard applicable to the proceeding.

Data Sources

List all data sources exhaustively: clinical interviews (dates, duration, location), psychological testing, collateral interviews, and all records reviewed. In violence risk assessment, collateral data is often more important than self-report because individuals being evaluated for dangerousness may minimize or deny violent behavior and risk factors.

Relevant History

History of Violence

This is the single strongest predictor of future violence. Document each known violent incident: date, nature of the violence, severity, victim characteristics, context, weapon use, substance involvement, legal outcome, and the individual's account. Include institutional violence (assaults in hospitals or correctional facilities), domestic violence, and threats. Use official records rather than self-report as the primary source.

Criminal History

Document arrests, charges, convictions, and incarcerations. Include juvenile history if available and relevant. Note patterns such as escalation in severity or frequency, types of offenses, and compliance with supervision.

Psychiatric History

Document diagnoses, treatment history, medication compliance, psychiatric hospitalizations, and the relationship between psychiatric symptoms and violent behavior. Certain conditions are empirically associated with elevated violence risk when symptoms are active: psychotic disorders (particularly command hallucinations and persecutory delusions), substance use disorders, antisocial personality disorder, and psychopathy.

Substance Use History

Substance use, particularly alcohol, stimulants, and PCP, is strongly associated with violence. Document patterns of use, relationship between intoxication and violent episodes, treatment history, and current substance use status.

Risk Assessment Framework

Identify the structured risk assessment instrument or framework you used. The HCR-20V3 is the most widely used SPJ instrument for general violence risk assessment. Other validated tools include the VRAG-R, LSI-R, START, SAPROF, and for sexual violence, the Static-99R and SVR-20.

Risk Factor Analysis

Historical Factors (HCR-20V3 H Scale)

These are static factors unlikely to change: prior violence, young age at first violent incident, relationship instability, employment problems, substance use problems, major mental disorder, psychopathy, early maladjustment, personality disorder, and prior supervision failure.

Clinical Factors (HCR-20V3 C Scale)

These are dynamic factors reflecting current clinical status: insight (into mental disorder, violence risk, and need for treatment), violent ideation or intent, symptoms of major mental disorder, instability (affective, behavioral, cognitive), and treatment or supervision response.

Risk Management Factors (HCR-20V3 R Scale)

These are contextual factors relevant to future risk management: professional services and plans, living situation, personal support, treatment or supervision response, and stress or coping.

Protective Factors

Identify factors that may mitigate risk: prosocial involvement, strong social support, responsivity to treatment, healthy attachment relationships, employment or structured activities, motivation for change, and resilience factors. The SAPROF (Structured Assessment of Protective Factors) provides a systematic framework.

Risk Formulation

Integrate the risk factor analysis into a narrative formulation. Explain the motivational, disinhibitory, and destabilizing factors that have contributed to past violence, and assess whether those factors are currently present or likely to recur. This is where clinical judgment adds value beyond a factor checklist.

Risk Communication

State your overall risk rating (low, moderate, high), specify the nature of potential violence (type, severity, targets), estimate imminence and frequency, and identify scenarios that would increase or decrease risk. Recommend risk management strategies.

Violence Risk Assessment — Civil Commitment Proceeding

VIOLENCE RISK ASSESSMENT REPORT

Evaluee: J.R.S., 34-year-old male Current Location: Oakridge State Psychiatric Hospital, Forensic Unit Legal Status: Involuntary civil commitment, admitted 11/02/2025 Date of Evaluation: 03/05/2026 and 03/08/2026 (7 hours total) Date of Report: 03/20/2026 Referral Source: Hon. Patricia Fernandez, Superior Court, pursuant to commitment review hearing scheduled 04/02/2026 Evaluator: [Name], Ph.D., ABPP (Forensic), Licensed Psychologist

Psycholegal Question: Does J.R.S. continue to pose a substantial risk of serious physical harm to others as a result of mental illness such that continued involuntary commitment is warranted?

Data Sources:

Clinical interviews with J.R.S. on 03/05/2026 (3.5 hours) and 03/08/2026 (3.5 hours)
HCR-20V3 coding from interview and file review
PCL-R (Psychopathy Checklist-Revised) scoring from interview and file review
MMPI-3
Oakridge State Psychiatric Hospital records, 11/2025-03/2026
Prior psychiatric hospitalization records (three admissions: 2018, 2021, 2023)
Criminal history records
Police reports from 10/28/2025 incident
Collateral interview: Dr. Adrienne Walsh, attending psychiatrist, Oakridge (03/06/2026)
Collateral interview: RN David Kim, unit charge nurse (03/06/2026)
Collateral interview: Maria Santos, J.R.S.'s mother (03/07/2026, by telephone)
Outpatient treatment records, Community Mental Health Center, 2019-2025

Criminal and Violence History: J.R.S. has three prior arrests: assault in the third degree (2018, charges dismissed after psychiatric hospitalization), criminal mischief in the second degree (2021, pled to disorderly conduct), and assault in the second degree (2023, found incompetent, charges dismissed after restoration and civil commitment). The current commitment arose from an incident on 10/28/2025 in which J.R.S., while actively psychotic, attacked a stranger at a bus stop, striking the victim repeatedly in the head and face with a metal water bottle, causing a concussion, facial lacerations requiring sutures, and an orbital fracture. Police reports indicate J.R.S. told arresting officers that the victim "was transmitting signals to the government" and "had to be stopped." J.R.S. was found not competent to stand trial and was civilly committed on 11/02/2025. The victim, a 62-year-old male, was hospitalized for three days.

Review of hospital records reveals two documented incidents of aggression during the current admission: a verbal threat toward a peer patient in 12/2025 and a physical altercation with a staff member in 01/2026 (struck staff member in the arm during medication administration; no injury). No incidents since 01/2026.

Psychiatric History: J.R.S. has a well-documented history of Schizoaffective Disorder, Bipolar Type, first diagnosed at age 22. He has been psychiatrically hospitalized four times (2018, 2021, 2023, and the current admission). Each hospitalization was precipitated by medication non-adherence leading to psychotic decompensation and violent behavior. Between hospitalizations, J.R.S. has demonstrated a consistent pattern of initial medication compliance following discharge, followed by discontinuation within 3-6 months, followed by psychotic relapse. Outpatient records document multiple instances of treatment non-compliance, missed appointments, and medication refusal.

Current medication regimen: paliperidone palmitate (Invega Sustenna) 234mg IM monthly (initiated 12/2025), valproic acid 1000mg daily. Attending psychiatrist Dr. Walsh reports J.R.S. has been compliant with medication in the hospital setting and has shown significant symptom improvement. Current presentation is described as "largely stable with residual paranoid ideation but no active delusions or command hallucinations."

Current Mental Status and Presentation: J.R.S. presented as alert, oriented, and cooperative during both interview sessions. Speech was normal in rate and volume. Thought process was generally linear with occasional tangential associations. He denied current auditory or visual hallucinations. He endorsed some residual paranoid ideation ("I still think people watch me sometimes, but I know it might be my illness"). He denied violent ideation, homicidal ideation, and intent to harm anyone. Affect was somewhat flat but appropriate to content. He expressed remorse about the bus stop assault: "I feel terrible about what happened to that man. I didn't know what I was doing. I was sick."

HCR-20V3 Risk Factor Analysis:

Historical Factors:

H1 (Violence): Present — four documented violent incidents across four hospitalizations, escalating severity from property destruction to assault causing serious injury
H2 (Other Antisocial Behavior): Present — criminal history includes non-violent offenses; institutional rule violations
H3 (Relationships): Present — no sustained intimate relationship; limited social network
H4 (Employment): Present — has not maintained employment for longer than 4 months since onset of illness
H5 (Substance Use): Partially Present — history of cannabis use, currently in remission; denies alcohol or other substance use; no evidence of current use in hospital
H6 (Major Mental Disorder): Present — Schizoaffective Disorder, Bipolar Type, well-documented and clearly linked to violent episodes
H7 (Personality Disorder): Partially Present — no formal personality disorder diagnosis; some features of interpersonal mistrust and rigidity
H8 (Traumatic Experiences): Present — reports physical abuse by father in childhood; witnessed domestic violence
H9 (Violent Attitudes): Partially Present — expressed some attitudes minimizing the severity of past violence during portions of the interview, though also expressed remorse
H10 (Treatment or Supervision Response): Present — pattern of medication non-adherence and disengagement from outpatient treatment; each violent episode followed treatment dropout

Clinical Factors:

C1 (Insight): Partially Present — J.R.S. acknowledges having a mental illness and acknowledges that violence occurred when he was psychotic; however, he minimizes his medication non-compliance as a risk factor, stating "I just forget sometimes" rather than acknowledging the pattern of intentional discontinuation documented in records
C2 (Violent Ideation or Intent): Not Present — denied current violent ideation, threats, or fantasies; no evidence from hospital records of current violent ideation
C3 (Symptoms of Major Mental Disorder): Partially Present — significant improvement from admission; residual paranoid ideation present but no active delusions or hallucinations; mood stable on current regimen
C4 (Instability): Partially Present — two incidents of institutional aggression in first two months; no incidents in past two months; emotional regulation improved but remains fragile
C5 (Treatment or Supervision Response): Partially Present — compliant with medication in the structured hospital setting; has not yet demonstrated compliance in a community setting; historical pattern of post-discharge non-compliance is the central risk factor

Risk Management Factors (In Community Context):

R1 (Professional Services and Plans): Partially Present — discharge plan under development; community mental health linkage not yet established
R2 (Living Situation): Present — prior to admission, J.R.S. was living alone in an apartment with no daily structure; mother has offered for him to live with her, which would provide some supervision
R3 (Personal Support): Partially Present — mother is involved and supportive; no other significant social support
R4 (Treatment or Supervision Response): Present — the central risk management concern; no evidence that J.R.S. can maintain medication compliance in the community without external structure
R5 (Stress or Coping): Present — limited coping skills; prior relapses triggered by social isolation and perceived stress

PCL-R Results: Total score: 14 out of 40. This score is below the clinical cutoff for psychopathy and below the research cutoff used in forensic populations. J.R.S. does not present with psychopathic personality traits. His violence is associated with psychotic symptoms, not with callous-unemotional or predatory interpersonal patterns.

MMPI-3 Results: Valid profile (F = 68T, Fp = 53T). Significant elevations on Psychoticism (82T), Ideas of Persecution (78T), and Low Positive Emotions (72T). Profile consistent with a stabilized but not fully remitted psychotic disorder.

Risk Formulation: J.R.S.'s violence history is closely linked to a single, well-established mechanism: psychotic decompensation secondary to medication non-adherence. All four documented violent episodes occurred during periods of active psychosis following discontinuation of antipsychotic medication. When compliant with medication, J.R.S. does not exhibit violent behavior, violent ideation, or antisocial attitudes. He does not have psychopathic traits, does not use violence instrumentally, and does not have a substance use disorder that independently drives violence.

The central risk factor is not J.R.S.'s mental illness per se but rather his pattern of medication non-adherence in the community. He has demonstrated this pattern consistently across four treatment episodes over eight years. His current compliance in the hospital is expected and not predictive of community compliance. Until he demonstrates sustained compliance in a less structured setting, the risk of psychotic relapse and associated violence remains significant.

Risk Communication: Overall violence risk: MODERATE to HIGH if discharged to independent community living without structured medication monitoring.

Nature of potential violence: Targeted, reactive violence toward strangers or acquaintances driven by persecutory delusions. Severity: potentially serious (the most recent assault caused significant physical injury).

Imminence: Not imminent while J.R.S. remains hospitalized and medication-compliant. Risk would increase substantially within 3-6 months of discharge if the historical pattern of medication non-adherence recurs.

Scenarios that would increase risk: Discharge to independent living without medication monitoring; discontinuation of antipsychotic medication; social isolation; loss of contact with mental health services.

Scenarios that would decrease risk: Long-acting injectable antipsychotic (currently receiving Invega Sustenna); structured living environment with daily monitoring; assertive community treatment (ACT) team involvement; court-ordered outpatient treatment with compliance monitoring.

Recommendations:

Continued inpatient treatment is warranted at this time to allow further stabilization and development of a comprehensive discharge plan.
Before discharge, establish a structured transition: step-down to a supervised community residence rather than independent living; enrollment in an ACT team; continuation of long-acting injectable antipsychotic to reduce non-adherence risk.
Consider recommending court-ordered assisted outpatient treatment (AOT/Kendra's Law equivalent) as a condition of discharge to provide a legal framework for medication compliance monitoring.
Reassess violence risk prior to discharge and at regular intervals following discharge.

This is a sample for educational purposes only — not real patient data.

How to Write It Step by Step

Step 1: Identify the psycholegal question and legal standard. Violence risk assessments are always conducted for a specific purpose and within a specific legal framework. Clarify exactly what you are being asked: Is this person too dangerous to release? What level of supervision does this person require? Does this person pose a threat to a specific individual? Identify the legal standard (e.g., "substantial risk of serious physical harm") and frame your assessment accordingly.

Step 2: Gather comprehensive data from multiple sources. Violence risk assessment must never rely primarily on self-report. Obtain criminal records, prior violence risk assessments, psychiatric records, institutional incident reports, police reports, and collateral interviews. Individuals being assessed for dangerousness routinely minimize or deny violent behavior.

Step 3: Select and apply a structured risk assessment framework. Use a validated SPJ instrument (HCR-20V3 for general violence, SVR-20 or Static-99R for sexual violence, SAVRY for adolescents). Code each risk factor systematically. Document the presence, relevance, and current status of each factor.

Step 4: Assess protective factors. Risk assessment is not only about identifying what increases risk — it also requires identifying what mitigates it. Use the SAPROF or a similar framework to systematically evaluate protective factors. Protective factors directly inform risk management recommendations.

Step 5: Develop a risk formulation. Move beyond a factor checklist to a narrative formulation that explains the individual's violence. What motivates their violent behavior? What disinhibits them? What destabilizes them? Is the violence instrumental or reactive? Is it linked to psychotic symptoms, substance use, antisocial attitudes, or interpersonal conflict? The formulation connects the factors to the individual's specific pattern.

Step 6: Communicate risk appropriately. State the overall risk level, the nature and severity of potential violence, likely targets, imminence, and scenarios that would increase or decrease risk. Avoid numerical probability estimates. Provide actionable risk management recommendations that the decision-maker can implement.

Step 7: Frame your conclusions within your competence. Your assessment informs the legal determination but does not make it. The court or hearing officer determines whether the legal standard for commitment, release, or supervision has been met. State your clinical findings and opinions clearly and let the legal decision-maker apply the law.

Common Mistakes

Providing a binary prediction. Stating "this individual will be violent" or "this individual will not be violent" exceeds what the science can support. Risk assessment is probabilistic and categorical, not binary. Communicate risk levels and scenarios, not predictions.
Relying on unstructured clinical judgment alone. Research consistently demonstrates that unstructured clinical prediction of violence is only marginally better than chance. Use a validated structured framework. Courts increasingly expect structured risk assessment, and your opinion is more defensible when grounded in an empirically supported methodology.
Ignoring base rates. The base rate of violence in any population affects the predictive accuracy of your assessment. In low base rate populations, even a good risk assessment instrument will produce many false positives. Acknowledge base rate limitations in your report rather than presenting your risk classification as more precise than the science allows.
Equating mental illness with dangerousness. The relationship between mental illness and violence is small, specific, and heavily moderated by other factors. Most people with mental illness are not violent. Diagnosing a mental illness does not, by itself, establish dangerousness. If mental illness contributes to this individual's violence risk, explain the specific mechanism (e.g., persecutory delusions that motivate targeted attacks) rather than making a general association.
Failing to recommend risk management strategies. A risk assessment that identifies risk factors without recommending management strategies is only half complete. Decision-makers need to know not only how dangerous the individual is but also what can be done to reduce the risk. Recommendations should be specific, practical, and tailored to the individual's risk formulation.