Forensics Flashcards
How much more common is violence in mentally ill compared with gen pop
4-6x
How many crimes can be attributed to mental illness
<10%
Risks of conviction for serious violence by men with SCZ compared to gen pop
5x risk of being convicted of serious violence
Annual risk of patient with SCZ committing homicide
Men - 1:3000
Women - 1:33,000
Prevalence of psychosis in male prisoners
3.7%
Prevalence of depression in male prisoners
10%
Prevalence of PD in male prisoners
65%
How much more common is psychosis in prison compared to gen pop?
10x more
Rate of homicide in the UK
1.2 in 100,000
% of individuals convicted of homicide who have mental illness
9% have SCZ
12% have other psychotic disorder
54% have secondary PD diagnosis
10% had contact with MH services in last year
Annual risk of person with SCZ committing homicide
1 in 10,000
What is filicide
Mother killing ones own child
Common mental illnesses in filicide
Depression - 25%
Psychosis - 40%
PD - EUPD and dependent
Dissociative response
Types of filicide
Battering mothers - impulsive (loss of temper)
Mentally ill mother
Neonaticides - within first 24 hours of life
Retaliating women - aggression towards spouse displaced on to child
Unwanted children - passive neglect or active aggression associated with unplanned pregnancies and socioeconomic hardship
Mercy killing
Definition of infanticide under Infanticide Act 1938
when a mother ‘causes death of her child under the age of 12
months by wilful act or omission, but at the time of the act or omission the balance of her mind was
disturbed by reason of her not having fully recovered from the effect of her having given birth to the child or
by reasons of the effect of lactation consequent on the birth of the child’.
Incidence of infant homicide in UK
30-45 per year
Incidence of murder-suicide
0.2-0.3 per 100,00 per year
Most common mental illness in murder-suicide
Depression - 20-60%
What is parricide
Killing ones parents
How many homicides are parricides
2%
What is common assault?
intentionally/recklessly causes another person to apprehend the
application of immediate unlawful force
What is aggravated assault?
when the individual attempts to cause serious bodily injury to another
or causes such injury purposely, knowingly, or recklessly under circumstances
manifesting extreme indifference to the value of human life; or attempts to cause or
purposely or knowingly causes bodily injury to another with a deadly weapon.
When is battery?
if he/she intentionally/recklessly applies unlawful force to the body of another
person. (A battery is committed when the threatened force actually results in contact with
the other and that contact was caused either intentionally or recklessly.)
How many individuals convicted of non-fatal violence have SCZ
9%