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The Global Insight

What is OASys probation

Author

Ava Hall

Updated on April 23, 2026

OASys is the abbreviated term for the Offender Assessment System, used in England and Wales by Her Majesty’s Prison Service and the National Probation Service from 2002 to measure the risks and needs of criminal offenders under their supervision. … assess risk of serious harm, risks to the individual and other risks.

What is the purpose of OASys?

OASys is designed to help practitioners to make sound and defensible decisions. Assessment is a process that continues throughout sentence. OASys can be used to re-assess offenders at various points during their sentence and to measure how they have changed.

What is a risk assessment tool probation?

Probation and parole departments use risk assessment to set the level of supervision, including home confinement and electronic monitoring. Further, risk assessments are used by case managers and treatment providers to identify needs and link individuals to appropriate services as part of reentry and supervision plans.

What type of risk assessment is OASys?

OASys is an actuarial risk and needs assessment tool used by the prison and probation services in England and Wales. The OASys is composed of 14 subsections and generates a summary risk score in order to assess likelihood of reoffending and risk of harm to self and others.

What are low risk offenders?

Minimum risk offender or a low risk offender refers to a criminal offender who has lesser tendencies to re-offend and is of minimal risk to the community. In most of the cases they may be first time offenders. … When supervised in the community, they are watched less closely than the high risk offenders.

How many problems does the OASys self assessment form include?

Asian offenders tended to re p o rt a lower frequency of problems than all other ethnic groups across 25 of the 27 questions, while those offenders with a high OASys likelihood of reconviction score were more likely than the medium and low likelihood groups to identify all 27 items as problematic.

What does offending Behaviour mean?

The term ‘offending behaviour’: definition – transgressing against or breaking a. law or rule.

What makes an offender high risk?

The California Department of Justice categorizes sex offenders as high-risk when his or her criminal history meets the statutory definition of high-risk, which includes offenders who have committed at least two violent offenses, at least one of which was a violent sex offense.

What is a medium risk offender?

Medium – There are identifiable indicators of risk of serious harm. The person has the potential to cause serious harm but is unlikely to do so unless there is a change in circumstances.

What is a static 99 test?

A Static-99 report is a report that helps assess the relative danger of a particular defendant. It is a risk assessment tool that is designed to evaluate a particular defendant’s danger to society. It is not used in all states. It is most often used to assess the dangerousness of an adult male sex offender.

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What is risk assessment in offenders?

Risk assessment sometimes involves categorising each offender at a particular time as presenting a distinct level of risk (ie, low, medium, high or very high). Operational experience has found that risk assessment can also identify the specific nature of the risk posed.

What is the lowest level of probation?

Informal probation is alternatively known as court probation or unsupervised probation. It is the probation assigned to low-risk offenders. It typically involves nothing more than paying your fines and fees and agreeing to commit no more violations of the law for the period of probation, typically 12 to 18 months.

What is a recidivism score?

Violent Recidivism scale: The Violent Recidivism score is meant to predict violent offenses following release. The scale uses data or indicators that include a person’s “history of violence, history of non-compliance, vocational/educational problems, the person’s age-at-intake and the person’s age-at-first-arrest.”

What is meant by offender risk?

For our purposes, “risk” refers to the probability of reoffending. A low risk offender is one with a relatively low probability of committing a new offense (i.e., relatively prosocial people with few risk factors), while a high risk offender has a much greater probability (i.e., more antisocial with many risk factors).

Do offending behaviour Programmes work?

Offending behaviour programmes often use cognitive-behavioural techniques. There is good international evidence that these are most effective in reducing reoffending.

Do out of court disposals work?

Out-of-court disposals are seen as an effective way of preventing the entry of children into the formal criminal justice system, but there is no clear evidence to show overall how effective they are in achieving this and diverting children from crime, and to confirm whether this is indeed the case.

What is Pathway theory?

Fundamentally, Pathways Theory posits that childhood (and sometimes adulthood) trauma can serve as trajecto- ries to offending behaviors (Belknap, 2015). This theory has largely been discovered and developed through the use of qualitative methodologies.

What are the four pillars of risk management?

The 4 Pillars of risk Management is an approach to the planning and delivery of risk management developed by Professor Hazel Kemshall at De Montfort University. The model is based on the four pillars of Supervision, Monitoring & Control, Interventions and Treatment and Victim Safety Planning.

What does the stable 2007 measure?

STABLE-2007 is a measure of risk factors relevant for the treatment and supervision of adult males charged or convicted of a sexually motivated offence. It was first described in a government report (Hanson, Harris, Scott, & Helmus, 2007) and later as a journal article (Hanson, Harris, & Helmus, 2015).

How accurate is the Static 99?

In short, the Static-99R predicted sexual recidivism with statistically significant accuracy for subjects with a fixed 5-year follow-up with a large effect size (AUC = 0.79, CI 95% = 0.70–0.87) in the study cohort (n = 100), where every unit of increase in the Static-99R total score correspondingly increased the odds …

What is actuarial assessment?

a statistically calculated prediction of the likelihood that an individual will pose a threat to others or engage in a certain behavior (e.g., violence) within a given period.

What is a dash police?

Dash stands for domestic abuse, stalking and ‘honour’-based violence. The questions are based on extensive research of domestic abuse.

What is serious harm?

Serious harm is defined in Part 11 of the Police Act as injury that may result in death, may cause serious disfigurement or may cause substantial loss or impairment of mobility of the body as a whole or of the function of any limb or organ.

What does an offender manager do?

The Offender Manager is responsible for assessing the person with a conviction’s risks and needs, planning how their sentence should run or deciding upon necessary interventions (for example a programme that will help them to think and act in a different way).

What are the five conditions of probation?

These terms may include compliance with all court orders, regular reporting to a probation officer or court, home searches, weapon prohibition, restriction from leaving the county or state, and drug and alcohol prohibition or restriction. Some probation conditions are tailored to the crime committed.

What does standard probation mean?

Standard probation conditions include: obey all laws. report as directed to a probation officer. pay all court-ordered fines, fees, and restitution. maintain employment, school, or vocational training, and.

What are some of the more common conditions of probation?

Typical conditions may include performing community service, meeting with your probation officer, refraining from using illegal drugs or excessive alcohol, avoiding certain people and places, and appearing in court during requested times.

What is a low pattern score?

The lowest score is -50. This is roughly how it works: PATTERN has four different predictive models, 1) general recidivism for males; 2) general recidivism for females; 3) violent recidivism for males; and 4) violent recidivism for females.

What states use Compas?

Use of COMPAS: COMPAS has been used by the U.S. states of New York, Wisconsin, California, Florida’s Broward County, and other jurisdictions.

What is a pattern score?

PATTERN calculates two separate scores: a person’s risk of reoffending in general and their risk of reoffending with an act of violence. … These scores determine whether someone is in a minimum-, low-, medium-, or high-risk category for reoffending.