Justice Models

These models and simulations have been tagged “Justice”.

 Assignment 3: Bourke Crime and Community Development​     This complex systems model depicts the impact of factors such as violence and community programs on the youth of Bourke. The time scale is in months and shows the next 6 years. The model aims to show how by altering expenditure in different
Assignment 3: Bourke Crime and Community Development​

This complex systems model depicts the impact of factors such as violence and community programs on the youth of Bourke. The time scale is in months and shows the next 6 years. The model aims to show how by altering expenditure in different areas, the town of Bourke can decrease crime and increase their population involvement in community programs. This model is intended to be dynamic to allow the user to change certain variables to see changes in impact

The town of Bourke has a population of 3634 people, 903 of which are classified as youth (being 0-24 inclusive) (ABS, 2016 census).
This population starts with all youths in three differing stocks:
- 703 in Youth
- 100 in Juvenile Detention
- 100 in Rehabilitation


Assumptions:
This model makes many assumptions that would not necessarily uphold in reality.

- Only the youth of the town are committing crimes.
- All convicted youths spend 6 months in juvenile detention.
- All convicted youths must go to rehabilitation after juvenile detention and spend 2 months there.
- The risk rate impacts upon every youth committing a crime and is a  broad term covering effects such as abuse.
- No gaol effect, youths do not return to town with a tendency to re- commit a crime.
- No further external factors than those given.
- There cannot be zero expenditure in any of the fields.


The stocks:
Each stock depicts a different action or place that an individual youth may find themselves in. 
These stocks include:
- Youth (the youths living in Bourke, where youths are if they are not committing crimes or in community programs)
- Petty Crime (crimes committed by the youths of Bourke such as stealing)
- Juvenile Detention (where convicted youths go)
- Rehabilitation
- Community Programs


The variables:
- Community Expenditure (parameter 0.1-0.4)
- Law Enforcement Expenditure (parameter 0.1-0.6)
- Rehabilitation Expenditure (parameter 0.1-0.4)
- Risk Rate (not adjustable but alters with Law Enforcement Expenditure)

Sliders on each of the expenditure variables have been provided. These variables indicate the percentage of the criminal minimising budget for Bourke.
Note that to be realistic, one should make the three differing sliders be equal to 1, in order to show 100% of expenditure

Base Parameter Settings:
- Law Enforcement Expenditure = 0.5
- Community Expenditure = 0.25
- Rehabilitation Expenditure = 0.25

Interesting Parameter Settings:
- When Law Enforcement is at 0.45 and Community and Rehabilitation at 0.3 and 0.25 (in either order) then convicted and not-convicted values are the same. If Law Enforcement expenditure goes any lower then the number of convicted youths is less than those not-convicted and vice versa if the expenditure is increased.
- When Law Enforcement is at 0.2 and Community and Rehabilitation at 0.4 each then the increase in community programs and decrease in crime and thus detention occurs in a shorter and more rapid time frame. This shows that crime can be minimised in this model almost entirely through community initiatives.
- Alternatively, when Law Enforcement is at 0.6 and Community and Rehabilitation at 0.2 each then the increase in community programs and decrease in crime occurs over a longer time period with more incremental change.



Population Source:

The complex
systems model ‘Engagement vs Police Expenditure for Justice Reinvestment in
Bourke, NSW’ evaluates the effectiveness of allocating government funding to
either community engagement activities or law enforcement. In this model, it is
possible for the user to designate resources from a sca
The complex systems model ‘Engagement vs Police Expenditure for Justice Reinvestment in Bourke, NSW’ evaluates the effectiveness of allocating government funding to either community engagement activities or law enforcement. In this model, it is possible for the user to designate resources from a scale of 20-100 and to also modify the crime rate for both adults and youth. Below, there are detailed notes that describe the reasoning and assumptions that justify the logic applied to this model. Similar notes can be found when stocks, flows and variables is clicked under the field ‘notes’.

Portions

Government statistics from the Australian Bureau of Statistics (ABS) show that Bourke Shire Regional Council has approximately 3000 residents, made up of 65-63% adults and 35-37% youths.

Crime Rate

Police variable is in the denominator to create a hyperbolic trend. The aim was to achieve a lower crime rate if police expenditure was increased, thus also a higher crime rate if police expenditure was decreased. The figure in the numerator can be changed with the ‘maximum crime rate’ variable which represents the asymptotic crime rate percentage. Where police = 100 the selected crime rate is maximised.

Avoiding Gaol

Originally the formula incorporated the police as a variable, where the total amount of convicted crimes was subtracted from the total amount of crimes committed. However, the constant flow of crimes from repeat offender/a created an unrealistic fluctuation in the simulation. I settled for a constant avoidance rate of 25%. This assumes that an adult or youth committing a crime for the first time is just as likely to avoid conviction as a repeat offender.

Conviction

​It is difficult to predict in a mathematical model how many adults or youths are convicted of crimes they commit. I determined a reasonable guess of maximum 75% conviction rate when Police = 100. In this formula, decreasing police spending equates into decreased conviction rate, which is considered a realistic representation.

Released

​It is assumed that the average sentence for a youth is approximately 6 months detention. For an adult, it will be assumed that the average sentence is 12 months gaol. The discrepancy is due to a few basic considerations that include 1. Adults are more often involved in serious crime which carries a longer sentence 2. youths are convicted with shorter sentences for the same crime, in the hopes that they will have a higher probability of full rehabilitation. 

Engagement

​Rate of adult/youth engagement was estimated to be a linear relation. The maximum rate of engagement, assuming expenditure = 100, is set to 80%. This rate of engagement is a reasonable guess with consideration that there will also exist adults who refused to engage in the community and end up in crime, and adults or youth that refuse to engage in the community or crime. 

Boredom

Engagement Expenditure variable is in the denominator to create a hyperbolic trend. The aim was to achieve a lower boredom rate with a higher engagement expenditure, and thus a higher boredom rate with a lower engagement expenditure. The figure in the numerator of 25 represents the asymptotic boredom rate percentage, where if engagement expenditure = 100 the adult/youth boredom rate is maximised at 25%. 

WIP summaries of  bill mitchell's blog  postings related to the connections between macroeconomics and wellbeing, particularly via unemployment and inflation
WIP summaries of bill mitchell's blog postings related to the connections between macroeconomics and wellbeing, particularly via unemployment and inflation
 Model Explanation   ​ This simple model highlights key investment areas within the Bourke community that can influence the overall levels of crime.      The total population of Bourke is split into a percentage of adults and youth who have differing participation rates in community groups. Those wh
Model Explanation 
This simple model highlights key investment areas within the Bourke community that can influence the overall levels of crime. 

The total population of Bourke is split into a percentage of adults and youth who have differing participation rates in community groups. Those who are engaged as a member of a community group most to a positive lifestyle state.

Those who do not wish to join or are not engaged in a community group are offered tertiary education. Similarly, those engaged in tertiary education move to a positive lifestyle state. Those who do not seek or engage in tertiary education are alienated from the community. They are at an 80% chance of committing crime. The other 20% voluntarily reengage with society. Once a crime is committed, the individual is either arrested or eludes arrest. The likelihood of arrest varies depending on policing expenditure. An individual who is arrested will be placed on trial and if found guilty will be placed in a correctional facility (either a juvenile detention centre of jail). 

Assumptions

Community engagement participation rates vary depending on the individuals age, with youth more inclined to join a community group. Variance in expenditure is reflected in participation rates in a linear fashion. 

Members of Bourke who are not engaged in community groups are targeted and presented with the opportunity to participate in tertiary education such as the teaching of trade-skills. Those targeted have the same likeliness to participate in tertiary education regardless of age. 

Those who do not seek any for of community involvement are considered alienated and at a high risk of committing crime.  

Sliders have been included to vary the total population size of Bourke, with ratios of Adult to Youth remaining the same. Expenditure can be varied depending on government distribution with the input in dollars. 

It is assumed that all relationships are linear within this model. Individuals who are either in a positive lifestyle or correctional facility are in that state for six months before returning to be part of the population of Bourke.

Interesting Results

Even with no Policing Expenditure, there are times when there are no individuals in a correctional facility if Community Engagement Expenditure and Tertiary Skills Development Expenditure is maximised.  

Bourke is a remote town approximately 650km from Sydney with a population of 2634. 28% of the population us made up of youths from 19 years old and younger. With a reputation of being one of the most dangerous towns in New South Wales.     To combat this, the Maranguka Justice Reinvestment Project w
Bourke is a remote town approximately 650km from Sydney with a population of 2634. 28% of the population us made up of youths from 19 years old and younger. With a reputation of being one of the most dangerous towns in New South Wales. 

To combat this, the Maranguka Justice Reinvestment Project was established to manage the situation with a goal of reducing youth crime through a serious of community projects including Early Years Transition (to prepare children for school) and Drive for Free, a program where volunteer police officers provide free driving lessons. 

This model has been developed to demonstrate how  youth alienation, police and community development interact with each other.           
      
Assumption

The following assumptions have been made:

25% of youths between the ages 10 - 24 are engaged in criminal behaviour. 

75% have positive engagement in society

Youth age group is from 5 years - 24 years

Youths have a 48% chance of not be rehabilitated and re-offending

Conclusion

It is evident, investment in early educational programs will have a positive impact on Youths within the township of Bourke. Attendance rates have grown from 86% to 92%. The provision of a strong educational program will contribute to breaking the cycle and result in more youths growing up to have a positive impact on society. Attendance rate for schools will improve and there will be an increase number of students who complete year 12 and transition to tertiary educations and/or employment. 

Investment of personal time of members of the police force to teach youths how to drive, has not only provided the kids with an opportunity they wouldn't ordinarily have due to family circumstances, but also decrease the amount of vehicle related offences. 

There is a correlation between the investment of time and money to provide the you members of Bourke's society with the right education and positive reinforcement with the reduction of criminal/negative behaviour.

Bibliography

NSW Bureau of Crime Statistics and Research. (2020). NSW Local Government Area excel crime tables.

Alexander, H. (2019, May 29). How NSW town labelled 'most dangerous in world' changed its destiny. Retrieved from Sydney Morning Herald: https://www.smh.com.au/national/nsw/how-nsw-town-labelled-most-dangerous-in-world-changed-its-destiny-20190527-p51ri6.html

Australian Bureau of Statistics. (2016). 2016 Census QuickStats. Retrieved from Australian Bureau of Statistics: https://quickstats.censusdata.abs.gov.au/census_services/getproduct/census/2016/quickstat/LGA11150?opendocument

Thompson, G., McGregor, L., & Davies, A. (2016, September 19). Backing Bourke: How a radical new approach is saving young people from a life of crime. Retrieved from ABC News: https://www.abc.net.au/news/2016-09-19/four-corners-bourkes-experiment-in-justice-reinvestment/7855114

 



 THE MODEL 

  Underlying
assumptions:  

         Police Force has a negative relationship with
committed crime (criminals) and has a positive relationship with Juvenile Detention.        Community Investment has a negative relationship
with committed crime.        Family – Police relations is nega
THE MODEL

Underlying assumptions:

  •      Police Force has a negative relationship with committed crime (criminals) and has a positive relationship with Juvenile Detention.
  •      Community Investment has a negative relationship with committed crime.
  •      Family – Police relations is negatively related to domestic violence rate, which has positive relationship with committed crime.
  •      Only the youth are law-breaking citizens (as this model mainly focuses on this population).   
  •      Coefficients are chosen arbitrarily. We may need more real data and research to determine the appropriate ones.

Constants:  

  • It took six months for Community Investment (which includes soccer team, trade-skills class and driving class) and Family – Police Relations to work.
  • Juvenile detention length is also 6 months.

Things to note:

  •      Youth in Bourke committed crime mainly because of the influence from high domestic violence rate, low police force rate (police investment), as well as low community investment rate. The figure was used to calculate the number of youth committing crime is the average of these three rates.
  •      Those violent families were detected by the Police Force, but then supervised by the responsible team, therefore reduce bad effects on the youths who have been suffering from that and finally reduce the likelihood of committing crimes.
  •      Community Investment in forming soccer team, trade-skills classes and driving classes moved a portion of returning criminals (the ones not got caught) to community engagement, therefore reduce the chances of committing crimes of these individuals.
  •      Maximizing the Police Force rate is probably the best way to reduce crime in short-term, but not likely in long-term because detention facilities cost much of the budget and it is not going to benefit the community. Since it is assumed that the total budget for justice reinvestment campaign in Burke is 50 units, an initial setting of 10, 25 and 15 units for Police Force, Community Investment and Family-Police Relations respectively is recommended.

Initial values:

Youth in town: 1200.

Criminals: 100.

Juvenile Detention: 100.

Violent families: 300                      

Detected violent families: 100.

Child and youth mental health and wellbeing synthesis with a focus on adverse childhood experiences and youth suicide WIP See also added  Women and Violence IM
Child and youth mental health and wellbeing synthesis with a focus on adverse childhood experiences and youth suicide WIP See also added Women and Violence IM
ContextBourke is a remote town located 800km northwest of Sydney, situated on the Darling River. The Maranguka Justice Reinvestment project emerged as Bourke was concerned about the number of Aboriginal families experiencing high levels of social disadvantage and rising crime. Bourke has worked for
ContextBourke is a remote town located 800km northwest of Sydney, situated on the Darling River. The Maranguka Justice Reinvestment project emerged as Bourke was concerned about the number of Aboriginal families experiencing high levels of social disadvantage and rising crime. Bourke has worked for many years to develop a model for improving outcomes and creating better coordinated support for vulnerable families and children through the true empowerment of the local Aboriginal community. Maranguka, meaning ‘caring for others’ in Ngemba language, is a model of Indigenous self-governance which empowers the community to coordinate the right mix and timing of services through an Aboriginal community owned and led, multi-disciplinary team working in partnership with relevant government and non-government agencies (Impact of Maranguka Justice Reinvestm...)
The Model
This model simulates the effects of community support funding and crime on at risk youth in the town of Bourke. It also shows how key indicators affect the engagement of youth in society. Breaking the cycle of self destruction by providing support at all stages. 

Variables
Bourke Youth- This variable can be adjusted to show the impact of population numbers on the effectiveness of community projects and funding levels.Community Funding- This variable can be adjusted to show the impact of community support programs to create positive behaviour change.Crime Rate – This variable can be adjusted to show the impact on at risk youth.

Conclusion
The model clearly shows that an increase in support services via increased funding will help break the cycle of youth alienation and build better futures.
This is a simple model that depicts the interactions between certain parameters in a hypothetical situation. It is designed to model the effects of investments in Policing and Community amongst Youth inside the town of Bourke.    Bourke is a rural town located 800km North-West of Sydney with alarmin
This is a simple model that depicts the interactions between certain parameters in a hypothetical situation. It is designed to model the effects of investments in Policing and Community amongst Youth inside the town of Bourke.

Bourke is a rural town located 800km North-West of Sydney with alarmingly high rates of crime, especially amongst the Youth in the town, due to a lack of interesting activities to occupy their spare time. The government has taken note of this and is planning a program which sees to invest funds into certain areas, in hopes of reducing the crime rate and amount of convictions primarily within the Youth Community.

  • Initial Values:
  • Youth: 750
  • Juveniles in Detention: 50
  • Petty Criminals: 200
  • Sports and Trade Skills/Education: 0


Assumptions: 
  • With the total amount of Youth entering Community Invested activities such as Sports and Trade Skills/Education, 70% of the entire of population of the youth entered is assumed to have selected the Sports team, compared to 30% that has selected Trade Skills/Education.
  • There is a negative correlation between the number of Police Enforcement and the temptation to commit crime.
  • There is a positive correlation between the number of Police Enforcement and the amount of Convictions, but over time, the number of convicted youth will reduce and temptation decreases.
  • The time taken to contribute back to the Youth Community from Sports Team will only take 3 months, compared to the 6 months taken to contribute back from Trade Skills, as it is generally easier to adapt to a Sports Team than learn a Skill from Education.
  • There is a 50% release rate for Juveniles inside the Detention Centre.
  • There are no other external influences other than Police and Investment in Community.
  • The benefit Youth can gain from the Sports Team or Trade Skills Classes is dependent on the amount of Community Investment; as Investment rises, the temptation of them to commit a petty crime decreases.
  • Youth that commit a crime can either be caught by Police and be convicted to Detention, or be undetected and return back to the Youth Community.
Key Notes:
  • During initial implementation of an Police increase, it should be noted that the number of convictions rise drastically in the first few months.
  • If no other implementations or adjustments are made to the level of Investment or Policing, all parameters will eventually smooth out or level out over time.
  • It is more effective to increase Investments into Community in terms of reducing temptation, rather than increasing the number of Police.
  • If Investment was put to its' extreme and Police Enforcement was put to the minimum of 1, Juvenile Detention will be at its' lowest, since Youth are not being caught.
  • Conversely, if Investment was at 0 and Policing was at its' extreme, the number of Juveniles will not drop below 500.
Jack Sun 44614586
 THE MODEL 

  Underlying
assumptions:  

         Police Force has a negative relationship with
committed crime (criminals) and has a positive relationship with Juvenile Detention.        Community Investment has a negative relationship
with committed crime.        Family – Police relations is nega
THE MODEL

Underlying assumptions:

  •      Police Force has a negative relationship with committed crime (criminals) and has a positive relationship with Juvenile Detention.
  •      Community Investment has a negative relationship with committed crime.
  •      Family – Police relations is negatively related to domestic violence rate, which has positive relationship with committed crime.
  •      Only the youth are law-breaking citizens (as this model mainly focuses on this population).   
  •      Coefficients are chosen arbitrarily. We may need more real data and research to determine the appropriate ones.

Constants:  

  • It took six months for Community Investment (which includes soccer team, trade-skills class and driving class) and Family – Police Relations to work.
  • Juvenile detention length is also 6 months.

Things to note:

  •      Youth in Bourke committed crime mainly because of the influence from high domestic violence rate, low police force rate (police investment), as well as low community investment rate. The figure was used to calculate the number of youth committing crime is the average of these three rates.
  •      Those violent families were detected by the Police Force, but then supervised by the responsible team, therefore reduce bad effects on the youths who have been suffering from that and finally reduce the likelihood of committing crimes.
  •      Community Investment in forming soccer team, trade-skills classes and driving classes moved a portion of returning criminals (the ones not got caught) to community engagement, therefore reduce the chances of committing crimes of these individuals.
  •      Maximizing the Police Force rate is probably the best way to reduce crime in short-term, but not likely in long-term because detention facilities cost much of the budget and it is not going to benefit the community. Since it is assumed that the total budget for justice reinvestment campaign in Burke is 50 units, an initial setting of 10, 25 and 15 units for Police Force, Community Investment and Family-Police Relations respectively is recommended.

Initial values:

Youth in town: 1200.

Criminals: 100.

Juvenile Detention: 100.

Violent families: 300                      

Detected violent families: 100.

WIP based on Tom Keneally's Three Famines Book
WIP based on Tom Keneally's Three Famines Book