risk assessment Flashcards
The Case of Myles Brandon Sanderson
59 criminal convictions as an adult
Upbringing: physical abuse, instability, neglect
PTSD and ADHD
Since 2017 – fights, threats, assault, gunpoint robbery
Statutory release on 4.5-year sentence
Stabbing spree on James Smith Cree Nation in 2022
◦ 11 people dead, 7 injured
high risk for spousal abuse
medium high risk fir reoffedning
risk factors
upbringing
statutory release
federal offedners who have served 2/3 of a fixed length sentence be released friom prison under superviison at that poiny
The Case of Gypsy Rose Blanchard
Victim of mother with
Munchausen by proxy
Physical, emotional, and medical
abuse
Met boyfriend online and set a
plan to kill her mother
June 10, 2015 – boyfriend
Nicholas Godejohn entered
house and killed mother and fled
with Gypsy
risk factors w gender/ sex??
yes
Risk Assessment
Judgement made about likelihood of events, such as future criminal acts
‘One of the most controversial issues in behavioral science and law’ (Borum,
1996)
Judges and Parole Boards
need this information to
keep the community safe
This information can be used
to justify extreme penalties
The Process of Risk Assessment
Prediction
The probability that a person will
commit future criminal or violent acts
Identifying risk factors that are
related to this likelihood of future
violence
Management
The development of interventions to
manage or reduce the likelihood of
future violence
Identifying what treatments might
reduce the individual’s level of risk
What conditions need to be
implemented to manage the
individual’s risk
Probability Considerations
- Probabilities may change across time
- Risk level reflects an interaction among a person’s
characteristics, background, and possible future
situations
Pretrial
Risk is too
high for bail
Risk is high enough
that a teen should be
tried as an adult
Sentencing /
Type of
Custody
Probation or
imprisonment
Minimum,
medium, or
maximum-
security prison
Release
Statutory
release could
be denied
Risk could be too
high to be
released to
mental health
facility
types of predictions
True Positive: correct prediction, we predicted it would and it did
True Negative: correct prediction, we predicted it wouldn’t and it didn’t
False Positive: incorrect prediction, we predicted it would and it didn’t
False negative: incorrect prediction, we predicted it wouldn’t and it did
The Base Rate Problem
the percentage of people within a given population who commit a
criminal or violent act
Difficult to make predictions when base rates are too low
If trying to make predictions based on low base rates → more false positives
◦ Example: school shootings
It is easier to make predictions within groups with high base rates
◦ Example: incarcerated offenders
Unstructured clinical judgement:
decisions characterized by substantial
amount of professional discretion and lack of guidelines
Mechanical Prediction
predefined rules about what risk factors to consider,
how much information should be collected, how information should be
combined