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3730491
BIOLOGICAL MODEL( WJEC)
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biological approach wjec summary mind map
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wjec psychology
biological model
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beckyjohu
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Created by
beckyjohu
almost 9 years ago
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BIOLOGICAL MODEL( WJEC)
ASSUMPTIONS
Evolutionary approach
adaptive
EXAMPLE: altruism
E.E.A
Neurotransmitters
nerve cells i.e neurons
presynaptic vesicle
post synaptic
synaptic cleft
examples:
serotonin and depression
dopamine and schizo
localisation of the brain
outer cortex= cerebral cortex for higher cognitive functions
split into 4 lobes
frontal lobe e.g.personality,problem solving
temporal lobe = hearing
occipital lobe = vision and colour
parietal lobe = pain and touch
DRUG THERAPY
ANTI ANXIETY
Stress, phobias
reduce adrenaline and noradremanline
BETA BLOCKERS reduce the above
Benzodiazepines e.g. increase GABA which reduces anxiety.
ANTIDEPRESSANTS
depression
SSRIS e.g. prozac
increase reuptake of serotonin
ANTIPSYCHOTICS
psychotic disorders e.g schizo
decrease dopamine in the brain to reduce hallucinations
newer atypical drugs e.g. chlozaril
KEY STUDY = RAINE
METHOD
41(39/2) Age 34
quasi experiment
matched design
age/ gender
PROCEDURE
opportunity sample
PET SCAN compare NGRI/control
injected with glucose tracer FDG
given CPT task before test
10 corticol peels after 32 mins took
FINDINGS
1. Reduced in corpus collosum, prefrontal cortex and LH with HAT
2. Increased in cerebellum/occipital lobe and RH with HAT( not previously linked to violence)
3. no difference3. no difference bn NGRI and control e.g. putamen and midbrain, not previouslylinked
CONCLUSION
RELATIONSHIPS
Assumption : neurotransmitters
chemical messengers controlling behaviour and emotions
neurons- presynaptic vesicle inhibit or stimulate receptor neuron
example : oxytocin - hug hormone released during contact e.g.romantic relationships
Evolutionary approach
adaptive function
e.g mother and child e.g. altruism
EVALUATION
SCIENTIFIC APPROACH
Measured, tracked, objective e.g.
PET scans in Raine study
e.g. drug therapy
DETERMINISITC
predetermines behaviour so can be controlled
e,g schizophrenia- dopamine
SUCCESSFUL APPLICATIONS
phamaceutical applications e.g. drug therapy
Cherek and SSR
drug therapy 60% improve with taking lithium ( Viguera et al)
REDUCTIONIST
NATURE RATHER THAN NURTURE
INDIVIDUAL DIFFERENCES
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