Crime Models
These models and simulations have been tagged “Crime”.
These models and simulations have been tagged “Crime”.
Justice Reinvestment in Bourke
Model Explanation:
One part of this model is displaying the typical lifestyle of many adults and youth in the town Bourke, North West of New South Wales. This lifestyle involves committing crime, getting arrested for the crime by police (or getting away with it) and spending time in jail (for adults) or juvenile detention (for the youth) or simply getting discharged.
Additionally to this traditional lifestyle being modelled, an alternative option called community groups has also been incorporated into the model. The model is showing that members of Bourke have the option to join a community group which the government hopes will improve their lifestyle when they are immersed once again into society, thus reducing the rate of crime.
The Stocks Involved:
Adult- The adults living in Bourke
Youth- The adolescents living in Bourke
Petty Crime- The standard crime committed by the youth of Bourke. This can include stealing cars and breaking into property.
Crime- The common crime circulating among the adults of Bourke. This includes domestic violence often as a result of heavy drinking.
Apprehended- Youth getting captured by the police
Arrested- Adults getting caught by the police
Juvenile Detention- Alienation of youth by police
Jail- Adults locked up by the police
Community Group- Groups formed for the people of Bourke to join. Includes development activities, sporting clubs and trade-skill learning classes.
Positive Lifestyle- Adults and youth who have improved themselves as a result of joining these community groups (the goal of community engagement program expenditure).
The Variables Involved and How to Adjust Them:
1. Policing: The number of police in the town of Bourke. The level and amount of punishment is dependent on the quantity of police present.
Minimum amount is one as there should be at least one police existent.
2. Community Engagement Expenditure: The total amount of money spent into community groups to develop individuals.
The purpose of the government is to spend money on community engagement activities so the minimum is at least one percent of the money they have available to spend and the maximum is 100 percent of the money they can afford to spend.
--> Both variables have a slider that goes up and down by one step. You can adjust both variables at the same time but take into account both variables have their own minimum and maximum.
Underlying Assumptions:
-Approximately 3000 people in Bourke
-Coefficients and initial values are arbitrarily chosen. These would be modified with real-life data.
-The only external influences on this model are police and community investment.
Suggested Settings for Interesting Results:
1. First move the policing and community expenditure sliders to their maximum. Hit the simulate button and look at the first time-series graph titled 'Youth Lifestyle'. Notice the delays between increase of each stock and the ordering: As Youth decreases, Petty Crime will increase. Then youth Apprehended will begin to increase followed by those going to Juvenile Detention. Youth will then start to increase again and the trend continues over the 3-year period displayed. Notice how the same pattern occurs for the time-series graph labelled 'Adult Lifestyle'.
2. Move the policing slider to 1 and the community expenditure slider to 100. Hit simulate. Notice in the 'Youth Lifestyle' graph how even with community expenditure at its maximum, over time, Petty Crime will still increase because there are hardly any police and hence hardly any youth getting caught so as a result the youth in Bourke keep to their regular immoral lifestyle. If you view the 'Adult Lifestyle' graph you will see the same pattern. (Note this point is a main reason for the conclusion drawn below).
3. Move the community engagement and policing slider to their minimum 1. Hit simulate. View the third display titled 'Community Engagement Program'. You will notice how Youth and Adult decrease and Crime and Petty Crime increase. Also, since community engagement is at its minimum too (not just policing) the amount of people in Community Groups decreases significantly and as a result the number of individuals creating a Positive Lifestyle for themselves decreases too.
4. Move the Community Engagement Expenditure slider to 1 and the Policing slider to 50 and look particularly at the last display labelled 'Adults and Youth: Membership and Crime Rates'. You will notice instantly how Community Group and Positive Lifestyle always have a lower number of individuals compared to the general Youth and Adult stocks as well as the Crime and Petty Crime stocks. This gives indication that a higher amount of investment should be put into the community engagement programs for better results.
Conclusions:
A combination of policing and community engagement expenditure is the best solution for the people of Bourke as the policing will gradually reduce the amount of crime and the community development programs will help create a positive lifestyle for each individual that joins. Overall it is not efficient to just invest in community development programs. For the most effective outcome, an increase in policing is needed as well as investments in community engagement activities.
Note: You do not need to dive into any formulae. But feel free to move the sliders and hit that simulate button to view how the number of people in each stock changes based on the level of policing and community engagement expenditure!
About the model
This model depicts crime patterns among the youth population of Bourke, within varying levels of policing expenditure, risk factor, rehabilitation expenditure and soccer club expenditure.
Underlying Assumptions:
Constants:
Interesting results:
- The rehabilitation centre will tame the most serious offenders, making them less likely to commit crime the next time round (Eg. Setting at 1.0)
- The soccer club will distract youths
from crime temptations, as well as nurture a sense of societal inclusion and wellbeing
in the long term (Eg. Setting at 0.4)
A stimulation on these parameters show that criminal rates are moderated, the ratio of youths in jail to town is lowered, and the outcome for the soccer club is very good with majority of participants feeling engaged.
MODEL EXPLANATION:
This model simulates possible crime patterns among the youth population of Bourke, where levels of alienation, policing and community engagement expenditure can be manipulated. Here the youth in Bourke have a minimum percentage of interest to participate in community activities in which the government aims to improve their lifestyle and therefore reduce the rate of criminal activity. ASSUMPTIONS:There are 1500 youths of Bourke in the population susceptible to committing crime and simulations of criminal tendencies are only based the factors presented, no external influences.
Justice Reinvestment in Bourke
Model Explanation:
One part of this model is displaying the typical lifestyle of many adults and youth in the town Bourke, North West of New South Wales. This lifestyle involves committing crime, getting arrested for the crime by police (or getting away with it) and spending time in jail (for adults) or juvenile detention (for the youth) or simply getting discharged.
Additionally to this traditional lifestyle being modelled, an alternative option called community groups has also been incorporated into the model. The model is showing that members of Bourke have the option to join a community group which the government hopes will improve their lifestyle when they are immersed once again into society, thus reducing the rate of crime.
The Stocks Involved:
Adult- The adults living in Bourke
Youth- The adolescents living in Bourke
Petty Crime- The standard crime committed by the youth of Bourke. This can include stealing cars and breaking into property.
Crime- The common crime circulating among the adults of Bourke. This includes domestic violence often as a result of heavy drinking.
Apprehended- Youth getting captured by the police
Arrested- Adults getting caught by the police
Juvenile Detention- Alienation of youth by police
Jail- Adults locked up by the police
Community Group- Groups formed for the people of Bourke to join. Includes development activities, sporting clubs and trade-skill learning classes.
Positive Lifestyle- Adults and youth who have improved themselves as a result of joining these community groups (the goal of community engagement program expenditure).
The Variables Involved and How to Adjust Them:
1. Policing: The number of police in the town of Bourke. The level and amount of punishment is dependent on the quantity of police present.
Minimum amount is one as there should be at least one police existent.
2. Community Engagement Expenditure: The total amount of money spent into community groups to develop individuals.
The purpose of the government is to spend money on community engagement activities so the minimum is at least one percent of the money they have available to spend and the maximum is 100 percent of the money they can afford to spend.
--> Both variables have a slider that goes up and down by one step. You can adjust both variables at the same time but take into account both variables have their own minimum and maximum.
Underlying Assumptions:
-Approximately 3000 people in Bourke
-Coefficients and initial values are arbitrarily chosen. These would be modified with real-life data.
-The only external influences on this model are police and community investment.
Suggested Settings for Interesting Results:
1. First move the policing and community expenditure sliders to their maximum. Hit the simulate button and look at the first time-series graph titled 'Youth Lifestyle'. Notice the delays between increase of each stock and the ordering: As Youth decreases, Petty Crime will increase. Then youth Apprehended will begin to increase followed by those going to Juvenile Detention. Youth will then start to increase again and the trend continues over the 3-year period displayed. Notice how the same pattern occurs for the time-series graph labelled 'Adult Lifestyle'.
2. Move the policing slider to 1 and the community expenditure slider to 100. Hit simulate. Notice in the 'Youth Lifestyle' graph how even with community expenditure at its maximum, over time, Petty Crime will still increase because there are hardly any police and hence hardly any youth getting caught so as a result the youth in Bourke keep to their regular immoral lifestyle. If you view the 'Adult Lifestyle' graph you will see the same pattern. (Note this point is a main reason for the conclusion drawn below).
3. Move the community engagement and policing slider to their minimum 1. Hit simulate. View the third display titled 'Community Engagement Program'. You will notice how Youth and Adult decrease and Crime and Petty Crime increase. Also, since community engagement is at its minimum too (not just policing) the amount of people in Community Groups decreases significantly and as a result the number of individuals creating a Positive Lifestyle for themselves decreases too.
4. Move the Community Engagement Expenditure slider to 1 and the Policing slider to 50 and look particularly at the last display labelled 'Adults and Youth: Membership and Crime Rates'. You will notice instantly how Community Group and Positive Lifestyle always have a lower number of individuals compared to the general Youth and Adult stocks as well as the Crime and Petty Crime stocks. This gives indication that a higher amount of investment should be put into the community engagement programs for better results.
Conclusions:
A combination of policing and community engagement expenditure is the best solution for the people of Bourke as the policing will gradually reduce the amount of crime and the community development programs will help create a positive lifestyle for each individual that joins. Overall it is not efficient to just invest in community development programs. For the most effective outcome, an increase in policing is needed as well as investments in community engagement activities.
Note: You do not need to dive into any formulae. But feel free to move the sliders and hit that simulate button to view how the number of people in each stock changes based on the level of policing and community engagement expenditure!
The traditional lifestyle for youth in this town involves either a chosen path of committing crimes, or, that of community activity and various forms of education.
The model has been designed to mimic a system where community expenditure and support services are adopted in order to inject a positive lifestyle for the youth population. The phenomena studied in this simulation is the balance between policing, community support and social influence versus not using them.
Assumptions
-1000 Youth Population
-Youth are either influenced by criminal activity or by productive educational activities.
- Adoption rate of community activities is influenced by personality, relating to current personal skill level of youth and willingness.
-If youth you do not become involved in community activity or some form of Education, then they turn to the path of crime.
-Punishment facility time is up to 12 months with a 2 year probation period
-Community expenditure and support only begins in the probation period, unless “Juvenile Support” slider is used.
-For the purpose of this study on youth crime and support before a crime is committed, we do not include a possibility of relapse in the rehabilitation phase.
STOCKS
VARIABLES
Policing Units – Policing Bourke's criminal activity, and convicting after a crime has been committed.
Juvenile Support Units – The variable change in crime IF the community funds Support Units for youth before a crime is committed.
Social Support Units – The number of social support units available for released offenders during rehabilitation phase.
Community expenditure – the amount of time and money being spent on social services and policing.
Birth rate, crime rate, dicharge rate, recidivism & conviction rate
INTERESTING RESULTS
Slide any of the 3 variables to the extreme.
This model shows that adoption rate of a positive lifestyle is directly influenced by social influences.
1/ Juvenile Support Unit impact
Press Simulate.
Slide Juvenile Support Units to the extreme. Simulate again.
Juxtaposition of Juvenile Support impact on Behavior Graph shows that Crime and Reoffend rates drop significantly. More people turn to law-abiding positive activity.
This will again all change with the manipulation of the Social Support unit slider…..
2/ Social Support Unit impact
Social Support Units only influence those released from the Punishment facility. The more social services on hand to support rehabilitation phase the less chance of committing crime for the second time, with Reoffend rates dropping significantly when the Social Support Units Slider is adjusted to the extreme.
Rehabilitation rates only increase marginally, in spite of more social support feeding into that phase.
The greatest impact is shown on Law-Abiding and Crime. How could this be? A logical conclusion is that there is a finite number of youth in the community and those who have received positive social support during a learning phase of rehabilitation, then go on to influence their friends, their family, and have a positive influence on those around them.
3/ Police Unit Impact
Slide Policing Units to the extremes. Simulate. Policing Units Graph shows there is a significant decrease in Reoffend rates, and a higher rate of Conviction.
Curiously, rehabilitation rates drop and crime rates go up. How could this happen? A logical conclusion is that conviction and punishment is not a crime deterrent. It needs the added influence of social support services for there to be a positive impact on decreasing criminal instincts and activity on the whole.
Conclusions
Social support and home visits need to happen in the flow between Youth Population and Crime - “Juvenile Support Units”.
Investment in youth via these juvenile social support officers before they commit an offence, limits the amount of criminal activity over time. So, crime effectively decreases with the direct influence of social services at a young age.
Equally, with more police presence in the community, for those tempted to re-offend, they have a deterrent.
The most efficient management of the community issues faced in Bourke however lies with a combination of both Policing and Social Support services at all levels within the community.
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Model Description:
This is a system dynamic model. This model is simulating the problem that is occurring in the town of Bourke NSW. It represents that as there is a lack of activities for the youth to participate in they take part in crime to satisfy their boredom. So, the model demonstrates what happens to the crime rates of the youth when more community investment is put in as well as what happens to crime when police presence is increased in Bourke. This simulation is displayed over 5 years monthly.
Assumptions:
<!- Community investment is distributed equally between all the activities.
2. Community investment affects participation rates and reduces the crime rates.
3. The number of police affects the caught rate of crimes
4. When investment increases crime decreases
5. When police presence increases crime rates decreases but the number of youth caught increases
6. The minimum amount in detention is 3 months so there is a 3-month delay – also detention released occur every 3 months and they are released in batches.
7. The amount being released corresponds to the amount caught
Interesting Results:
Police (5), Community Investment (0) – this is a based result showing crime is high and the caught rate is low with no police presence
Police (30), Community Investment (0) – it shows crime is decreasing and amount caught is increasing as more police are present
Police (45), Community Investment (0.2) – it displays that crime is decreasing and the other activities are becoming more popular and is satisfying the youths boredom as well. Boredom also decreases.
Police (65), Community Investment (0.4) - crime and boredom have reduced dramatically due to an increase in investment. Also, the caught rate is becoming more frequent. Also sporting and tafe activities are becoming more prevalent.
Police (100), Community Investment (0.5) – Max police and community investment, shows crime, boredom and amount caught have diminished. Sport and tafe have increase rapidly.
<!- Variables involved:
<!- Community investment – is an adjusted variable as it displays the increase in investment in the community showing a maximum of 50% and a minimum of 5%. This variable can be adjusted with the community investment slider.
<!- Caught variable – it determines the rate of being caught by dividing the amount of police by 100 to get a percentage. This is fixed, but is adjusted by the police stock. This variable can be adjusted with the police slider.
Educated Rate - is a fixed variable with a if statement saying once crime is lower than 100 people more people are leaving tafe educated.This is to show that the rate changes once crime decreases.
Leaving rate - is a variable that is fixed with a if statement saying once crime reaches less than a 100 it reduces the amount leaving. This is to show that the rate changes once crime decreases.
Stocks:
Tafe - Trade skills, Hospitality, vet, personal training
Sport - AFL, Rugby, Netball, Volleyball, Soccer, Cricket
Boredom - in the community walking around the streets, at home doing nothing and looking for trouble.
Youth - population of youth
Crime - Stealing, breaking and entering, drinking under age, taking illegal substances, assault and destroying property.
Caught - gets caught by police.
Police - on duty to take of the community.
Detention - jail/juvenile detention is the punishment for the crimes.
Va
MODEL EXPLANATION:
This model simulates possible crime patterns among the youth population of Bourke, where levels of alienation, policing and community engagement expenditure can be manipulated. Here the youth in Bourke have a minimum percentage of interest to participate in community activities in which the government aims to improve their lifestyle and therefore reduce the rate of criminal activity. ASSUMPTIONS:There are 1500 youths of Bourke in the population susceptible to committing crime and simulations of criminal tendencies are only based the factors presented, no external influences.
MODEL EXPLANATION:
This model simulates possible crime patterns among the youth population of Bourke, where levels of alienation, policing and community engagement expenditure can be manipulated. Here the youth in Bourke have a minimum percentage of interest to participate in community activities in which the government aims to improve their lifestyle and therefore reduce the rate of criminal activity. ASSUMPTIONS:There are 1500 youths of Bourke in the population susceptible to committing crime and simulations of criminal tendencies are only based the factors presented, no external influences.
MODEL EXPLANATION:
This model simulates possible crime patterns among the youth population of Bourke, where levels of alienation, policing and community engagement expenditure can be manipulated. Here the youth in Bourke have a minimum percentage of interest to participate in community activities in which the government aims to improve their lifestyle and therefore reduce the rate of criminal activity. ASSUMPTIONS:There are 1500 youths of Bourke in the population susceptible to committing crime and simulations of criminal tendencies are only based the factors presented, no external influences.
INTRODUCTION
This model simulates the effect of Police expenditure, Community expenditure and substance abuse (Alcohol and drugs).
This model can be used by community member responsible for making expenditure decision for the community. The variable can be manipulated for see how changes in community engagement and policing expenditure affect other parts of the community.
STOCKS-
Youth- The adolescents living in Bourke
Adult- The adults living in Bourke
Crime- The common crime circulating among the adults of Bourke.
Apprehended- Getting captured by the police
Community Group- Groups formed for the people of Bourke to join. Including development activities, trade-skill learning classes and sports.
Positive Lifestyle- Adults and youth who have improved themselves because of joining these community groups and leading a positive lifestyle.
VARIABLE-
Community Expenditure - The amount of money spent on community groups to develop skills and keep the adults engaged. The variable can be raised to increase the amount of population (Adult or Youth) joining a community group which can lead to a positive lifestyle.
Alcohol and Drugs - This variable acts as an agent to disengage Adult and Youth from the community.
The Policing Expenditure - The number of money spent after police. This variable can be changed to affect the number of people getting apprehended.
ASSUMPTION-
1) 3000 People living in Bourke
2) External Influence - Community groups, Police and Substance abuse
3) 70% of the population are Adult and 30% are Youth
4) Crime- 600
5) Apprehended -
6) Community Group - 300
7) Positive life - 100
8) Jail - 480
SUGGESTED SETTING
Positive Lifestyle lead by the community- Setting the Community Expenditure to a high 80, policing factor to a medium 50 and Substance abuse to a low 30 we will see a surge of positive lifestyle.
High Rate of Engagement- An increase in the Substance abuse variable to 10% shows crime and people in jail increase but the ratio of people engaged in community groups is much higher.
CRIME RATE (HIGHEST) - If Community Engagement Expenditure and Policing Expenditure are reduced to zero the amount of crime increases significantly over time and the amount of people in jail reduces to near zero.
CONCLUSION
A combination of policing and community engagement expenditure is the best solution for the people of Bourke.The policing will gradually reduce the amount of crime and the community development programs will help create a positive lifestyle.
For the most effective outcome, an increase in policing is needed as well as investments in community engagement activities.
