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Chapter 11

PSYC 3020 Chapter Notes - Chapter 11: Limbic System, Amygdala, Prosocial Behavior

Course Code
PSYC 3020
Dan Yarmey

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PSYC 3020
Psychopaths have been called instaspecies predators. They lack a conscience and
feelings for others, they satisfy their own selfish needs by preying on others.
Psychopathy: personality disorder defined by a collection of interpersonal, affective
and behavior characteristics. They are dominant, selfish, manipulative, impulsive
and anti-social.
In Alaska this is known as: Kulangeta (someone who repeatedly lies and cheats)
Assessment of Psychopathy
1. Psychopathy-Checklist-Revised (PCL): It is a 20 item scale that uses a semi-
structured interview and a review of file information to assess the features of
psychopathy. It is on a 3 point scale with a total out of 40 points.
There are two factors
a) Reflects the combination of interpersonal and affective traits
b) Combination of unstable and socially deviant traits
They have found that the first factor is more strongly related to predatory violence,
emotional processing deficits and poor treatment response whereas factor two is
strongly related to reoffending, substance abuse, lack of education and poor family
Three factor model
- Arrogant and deceitful interpersonal lifestyle
- Deficient affective experience
- Impulsive and irresponsible behavioral style
- Antisocial
2. Self-Report Questionnaires
Advantages: they are able to measure that attributes and emotions that are not
easily observed by others, easy to administer, not necessary to worry about inter-
rater ability and some measures can detect whether they are faking good or bad.
Disadvantages: psychopaths often lie, they may not have sufficient insight to
accurately assess their traits, hard to report specific emotions if they have not
experienced them.
PPI (traits in community and offender samples) & the SPR (community
find more resources at oneclass.com
find more resources at oneclass.com
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