AC 2.1- biological theories- brain disorders/injuries and biochemical

Question 1

brain injuries: what are the 4 main functions of the frontal lobe

Answer 1

rational thinking, emotion, personality and motor control

Question 2

brain injuries: what happens if there is damage to the frontal lobe

Answer 2

can lead to behavioural changes and changes in sexual habits

Question 3

brain injuries: study- phineas gage (4)

Answer 3

-had metal rod through his skull and survived
-personality changed: prefrontal cortex was damaged
-described as an animal, psychopathic and aggressive
-shows damage to frontal lobe leads to behavioural changes eg. aggressiveness- more likely to indulge in criminality

Question 4

brain diseases: what is the CTE brain disease (2)

Answer 4

-progressive brain condition caused by repeated blows to head
-causes aggression, changes in mood, memory loss

Question 5

brain diseases: what does a brain tumour do (3)

Answer 5

-causes cognitive impairment
-impaired executive function, learning, working memory, communication
-criminality often due to loss of inhibition+self-regulation

Question 6

brain diseases: case study- charles whitman (3)

Answer 6

-had brain tumour- identified in autopsy
-suicide note said he had unusual+irrational thoughts
-killed 14 people, injured 31 by randomly opening fire on a rooftop. killed mother+wife

Question 7

biochemicals: what is testosterone

Answer 7

-hormone affecting appearance +sexual development

Question 8

biochemicals: testosterone linked with criminality (2)

Answer 8

-linked to aggressiveness and violent crimes
-over/under production can cause disturbances in behaviour

Question 9

biochemicals: what is seratonin

Answer 9

regulates mood
-can cause significant changes in mood+ability to control mood
-controlled by diet

Question 10

biochemicals: seratonin linked with criminality

Answer 10

low amounts of linked with higher aggression