Biological Approach Flashcards
(44 cards)
Why are males more physically aggressive than females
To ensure that offspring is theirs and genes are passed on
2 strengths for CAT scans
Non invasive
Reliable / replicable
2 weaknesses of CAT scans
Involves radiation
Only measures structure and layout of brain
How do PET scans work
Patient is injected with radiative tracer which is absorbed into the bloodstream
Glucose is used by and positrons are emitted
2 strengths of PET scan
Replicable
Valid unbiased images
2 weakness of PET scans
more invasive
Artificial setting
or colours hard to distinguish
2 strengths of fMRI scans
Replicable
Non invasive
2 weaknesses of fMRI
artificial setting
Not suitable for all people
Aim of Raine Et al Classical study
To identify brain dysfunctions with people charged with murder who plead NGRI
method and sample of raine
41 murders 41 non murderer
39 males 2 females
Matched pair design: age sex ethnicity
Procedure of Raine
Remitted to University of California to be assessed for NGRI
pps free from medication 2 weeks prior - urine test
Matched pair
Pps underwent PET scan and continuous performance task which was Identifying targets on screen
32 minute period
PET took 10 images at 10mm intervals
Findings of PET in glucose metabolism
Murders had lower glucose metabolism in areas linked to violence
Areas of cortical area
Lateral and prefrontal areas
Areas of subcortical
Corpus colosseum
Left amygdala
Define evolution
The gradual development of organisms overtime
Define natural selection
Organisms that are adapted to their environment by passing on genes
Define survival of the fittest
Changing on characteristics genes and traits to survive
Define male retention
When males deter their mate from leaving
Define negative inducement
When they shout at female partner for looking at another man
Define partner guarding
Restricting partner from interacting with others
What is the study for evolution and aggression
Shackleford 2005
What did shackleford do
Made 461 men ans 560 women who were in a heterosexual relationship to report male retention in their relationship
What did shackleford find
That there was a positive correlation with their violence scores
what principle is ID
pleasure