UNIT #11 & 15: Psychopaths & Homicidal Offenders Flashcards
Adversarial allegiance
The tendency for the forensic psychologist to be biased towards the side (defence or prosecution) that hired them
Antisocial personality disorder
Personality disorder characterized by a history of behaviour in which the rights of others are violated
Antisocial process screening device
Observer rating scale to assess psychopathic traits in children
Hare Psychopathy Checklist-Revised
x3
(1) Most popular method of assessing psychopathy in adults
(2) 20-item rating scale that uses a semi-structured interview and a review of file information to assess interpersonal (e.g., grandiosity, manipulativeness), affective (e.g., lack of remorse, shallow emotions), and
behavioural (e.g., impulsivity, antisocial acts) features of psychopathy
(3) Each item is scored on a 3-point scale: 2 indicates that the item definitely applies to the individual; 1
indicates that it applies to some extent; and 0 indicates that the symptom definitely does not apply. The items are summed to obtain a total score ranging from 0 to 40.
Hate Psychopathy Checklist: Youth Version
Scale designed to measure psychopathic traits in adolescents
Psychopathy Personality Inventory-Revised
A self-report measure of psychopathic traits
Psychopathy
Personality disorder defined by a collection of interpersonal, affective, and behavioural characteristics, including manipulation, lack of remorse or empathy, impulsivity, and antisocial behaviours
Response Modulation Deficit Theory
Theory that suggests psychopaths fail to use contextual cues that are peripheral to a dominant response set to modulate behaviour
Self-Report psychopathy Scale
A self-report measure of psychopathic traits
Sexual homicide
Homicides that have a sexual component
Sexual sadism
People who are sexually aroused by fantasies, urges, or acts of inflicting pain, suffering, or humiliation on another person
Sociopathy
A label used to describe a person whose psychopathic traits are assumed to be due to environmental factors
Androcide
The killing of men
Comfort serial killer
A murderer who is motivated by material or financial gain
Familicide
The killing of a spouse and children
Femicide
The killing of women
Filicide
The killing of children by their biological parents or step-parents; includes neonaticide (killing a baby within 24 hours of birth) and infanticide (killing a baby within the first year of life)
Hedonistic serial murderer
Motivated by self-gratification. Divided into 3 subtypes:
- lust
- thrill
- comfort
Infanticide
A woman killing her newly born child due to a mental disorder arising from the effects of childbirth
Instrumental (predatory) aggression
Aggression that is premeditated, calculated, and motivated by some goal
Lust serial
Murderer
Motivated by sexual gratification
Mass murder
The killing of three or. More victims at a single location during one event with. No cooling-off period
Mission-oriented serial murderer
Targets individuals from a group that he considers “undesirable”
Power/control serial murderer
Motivated by wanting to have absolute dominance over the victim
Reactive (affective) aggression
Aggression that is impulsive, unplanned, immediate, driven by negative emotions, and occurring in response to some perceived provocation
Serial murder
The killing of a minimum of 3 people over time. The time interval between the murders varies and has been called a cooling off period. Subsequent murders occur at different times, have no apparent connection to the initial murder, and are usually committed in different locations.
Thrill serial murderer
A murderer who is motivated by the excitement associated with the act of killing
Visionary serial murderer
Kills in response to voices or visions telling him to kill
Relationship between antisocial personality disorder and designation of psychopath
x10
(1) Related but distinct:
(2) Although psychopathy and APD share some features, APD places more emphasis on antisocial behaviours than does the PCL-R.
(3) Nearly all psychopathic offenders meet the diagnostic criteria for APD, but most offenders diagnosed with APD are not psychopaths
(4) APD symptoms are most strongly related to the behavioural feature of psychopathy and not to the
interpersonal or affective features
(5) Antisocial personality disorder: A personality disorder characterized by a history of behaviour in which the rights of others are violated.
(6) Reckless disregard for safety of self or others
■Consistent irresponsibility
■Lack of remorse
(7) Irritability or aggressiveness
(8) Impulsivity or failure to plan ahead
(9) Deceitfulness
(10) Failure to conform to social norms with respect to lawful behaviors.
How does violence fit into the psychopath’s behavioural repertoire?
(1) One study found that when nonpsychopaths commit violence, they are likely to target people they know and their violent behaviour is likely to occur in the context of strong emotional arousal
(2) psychopaths are more likely to target strangers and be motivated by revenge or material gain.
(3) Characteristics that ordinarily help to inhibit aggression and violence, such as empathy, close emotional bonds, and internal inhibitions, are lacking or relatively ineffective in psychopaths.
(4) Compared to nonpsychopathic offenders, they start their criminal career at a younger age and persist longer, engage in more violent offences, commit a greater variety of violent offences, engage in more violence within institutions.
(5) researchers concluded that psychopaths engage in “cold-blooded” homicides muchmore often than
nonpsychopaths.
(6) more likely to be violent after release:
(7) Psychopathic violence is more likely to be predatory in nature, motivated by readily identifiable goals, and carried out in a callous, calculated manner without the
emotional context that usually characterizes the violence of other offenders.
(8) Several studies have found that offenders who engage in instrumental violence (premeditated violence to obtain some goal) score significantly higher on measures of psychopathy than do offenders engaging in reactive violence (impulsive, unplanned violence that occurs in response to provocation.
Are psychopaths treatable?
x4
(1) Unlike most other offenders, they suffer little personal distress, see little wrong with their attitudes and behavior, and seek treatment only when it is in their best interests to do so (such as when seeking
probation or parole).
(2) Treatment was associated with a reduction in violent recidivism among nonpsychopaths but an increase in violent recidivism among psychopaths.
(3) Although psychopaths may be challenging to treat, there is evidence that, especially in youth, they are
amenable to treatment.
(4) These researchers found that although psychopathic sex offenders who dropped out of treatment were more likely to violently reoffend, those psychopathic sex offenders who stayed in treatment showed positive
treatment gains and were less likely to violently reoffend.
important findings about the emergence of psychopathy prior to adulthood
x6
(1) results indicated that there was a moderate degree of stability in psychopathic traits from age 13 to age 24.
(2) assumption is that psychopathy does not suddenly appear in adulthood but instead gradually develops from various environmental and biological antecedents
(3) measures have been developed to identify psychopathic traits early in development.
(4) Two assessment instruments have been adapted from the PCL-R: one for use with children and the other for adolescents.
1. Hare Psychopathy Checklist: Youth Version: Scale designed to measure psychopathic traits in adolescents
2. Antisocial process screening device.
- child is assigned a rating on various questions by parents or teachers
- designed for assessing the precursors of psychopathic traits in children
(5) boys who score high on the callous/unemotional dimension of the APSD have more police contacts, have more conduct problems, and are more likely to have a parent with APD than are children who score
low on this dimension.
- youth with psychopathic traits may be more responsive to interventions.
(6) Research using the PCL:YV has found that adolescents with many psychopathic traits become involved in criminal behaviours at an earlier age, engage in more violence in institutions and in the community, and are at a higher risk of reoffending once released as compared with other adolescents.
Theories that describe why psychopath acts the way he does
x5
(1) Two of the most prominent theories of psychopathy place emphasis on either cognitive or affective processes
(2) Response Modulation Deficit Theory:
- Used to explain why psychopaths fail to learn to avoid punishment
- Suggests that psychopaths fail to use contextual cues that are peripheral to a dominant response set to modulate their behaviour
- If psychopaths are engaging in specific rewarded
behavior, they will not pay attention to other information that might inhibit their behaviour
(3) Other theory proposes that psychopaths have a deficit in the experience of certain critical emotions that guide prosocial behaviour and inhibit deviance
(4) Hervey Cleckley (1976) Theorized Psychopaths have a deep-rooted emotional deficit that involves the disconnection between cognitive-linguistic processing and emotional experience
(5) Amygdala dysfunction Theory:
- Amygdala Is part of the limbic center, which regulates the expression of emotion and emotional memory
- Linked to many other brain regions responsible for memory, control of the autonomic nervous system,
aggression, decision-making, approach and avoidance behavior, and defence reactions
- Other researchers have proposed that other Brain areas are implicated and suggested a Paralimbic model to explain emotional deficits seen in psychopaths
- Recently researchers argued that the emotional deficits Seen in psychopaths can be explained by an attention deficit and are not due to amygdala-Mediated deficit
Causes or origins related to the development of psychopathy
(1) Nature versus nurture:
- Focusses on the relative importance of a person’s innate characteristics (nature) as compared with his personal experiences (nurture)
- Growing evidence suggests a strong genetic contribution to psychopathy
(2) Family:
- Experiments assessing Callous/unemotional traits in Youths or psychopathy in adults and asking them about their child experiences Have found that psychopathic individuals report lower levels of parental care (For example, warmth, attachment)
- Measuring family background variables between ages 8 and 10, the best predictors Of adult psychopathy were having a criminal father and mother, being a son whose father was uninvolved with him, having little family income, coming from a disrupted family, and experiencing physical neglect
Bimodal classification Of aggression
x4
(1) Kingsbury, Lambert, and Hendrickse (1997)
proposed a bimodal classification scheme for the study of homicide in humans, in which homicides are classified as reactive (affective) aggression or instrumental (predatory) aggression.
(2) Reactive homicide occurs more often among relatives, and instrumental homicide among strangers
(3) Eighty percent were classified as reactive, and 20% as instrumental. In this study, the victim-offender relationship was divided into three categories: strangers, acquaintances, and family members/intimates.
(4) Most of the homicides involved acquaintances (55%), with most of these being classified as reactive (80%).
Family members and intimate partners accounted for 28% of the cases, with nearly all these homicides being classified as reactive (93%). Finally, in 17% of the cases,
the victim was a stranger, with 52% being classified as reactive.
Bimodal classification Of aggression:
Reactive homicide
Aggression that is impulsive, unplanned, immediate, driven by negative emotions, and occurring in response to some perceived provocation