Biological Studies

Question 1

Brain structure:

Kluver-Bucy

Answer 1

-removed part of temporal lobe and destroyed amygdala’s of monkeys
-led to more high risk behaviour - attacked more dominant monkeys
-done on monkeys so can’t be compared to humans

Question 2

Brain structure:

Wong(1997)

Answer 2

-went to broadmoor hospital and did mri scans on 19 criminals
-found volume of amygdala was smaller in volume compared to control group
-could be degraded due to stress of prison

Question 3

Testosterone:

Wagner(1979)

Answer 3

-castrated mice and observed aggression levels dropped
-when mice were injected with testosterone aggression levels rose again

Question 4

Testosterone

Von saal (1983)

Answer 4

-female rats who developed closest to males in uterus were most aggressive in female litter
-due to prenatal exposure to testosterone

Question 5

Evolution

Daly and Wilson (1985)

Answer 5

-investigated the motive behind murders in 1972
All involved were unemployed and unmarried men
-low status and without a mate

Question 6

Neurotransmitters

Ferrari(2003)

Answer 6

-made a rat fight everyday for 10 days at the same time
-on 11th ray no intruder rat introduced
-the rats dopamine levels increased and serotonin levels decreased
-shows brain chemistry had altered to prepare for conflict