Unit 1 - Biological Approach Flashcards Preview

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Flashcards in Unit 1 - Biological Approach Deck (20):
1

3 assumptions of the biological approach

Evolutionary experiences
Localisation of brain function
Neurotransmitters

2

Two areas within evolutionary influences

Theory of natural selection (enhancing genes passed down)
Environment of evolutionary adaptiveness (environment species adapts to due to selective pressures)

3

Explain Localisation of brain function

Certain areas are responsible for different functions

4

4 brain areas ...

Frontal lobe (thinking, creativity)
Parietal lobe (sensory info, pain, temp)
Temporal lobe (memory processing, auditory, speech)
Occipital lobe (visual processing, receive info from eyes)

5

Explain neurotransmitters...

Neurotransmitters are chemicals that are found in nervous system
Send signals/messages
Passes though neurons and synapses

6

Biological assumption links to human behaviour

Schizophrenia (neurotransmitters too much dopamine)
Relationship formation (neurotransmitters oxytocin link to bonding)

7

The Biological therapy is ...

Drug therapy

8

Drug therapy involves which types of drugs?

Psychotherapeutic
Anti depressants (SSRI’s)
Anti anxiety (Benzodiazapines, Beta blockers)

9

Strengths of drug therapy

Effectiveness is high
Relatively cheaper than others ie. therapy

10

Weaknesses of drug therapy

Side effects
Underlying cause not treated
Unethical to give inferior treatment
Lack of valid consent

11

Classic study of biological approach

Raine - brain abnormalities

12

Methodology of Raine’s study

Quasi experiment
Matched pairs
Ex group - 41 participants, charged with manslaughter or NGRI
Control group - 41 participant

13

Procedure of Raine’s study

Opportunity sample
PET Scan
10 mins before injection - practiced CPT
30 seconds before - started CPT
Injected with tracer, flurodeoxyglucose
32 minus after injection - PET Scan given

14

Findings of Raine’s study

Ex group
- reduced activity in brain areas previously linked to violence
- lower activity in cortical regions
Control
- increased activity in cerebellum + right hemisphere
Both performed similar of CPT

15

Conclusions of Raine’s study

Supports previous research
Suggests neural processes underling violence
Reduced brain activity could be a predisposition

16

Strengths of Raine’s study

G - large sample
R - scans are objective, so no bias, scientific
A - PET scans used in legal systems
V - internal validity
E - improve marketing techniques

17

Weaknesses of Raine’s study

G - small sample, all american, opp sample
R
A
V - PET scans only indicate, limited population validity & ecological validity
E - stressful being in a PET scan, no withdrawal

18

5 areas to look at when debating ethics of neuroscience

Understanding conscience
Treating criminal behaviour
Enhancing neurological function
Improve marketing techniques
Society and the economy

19

Strengths of the biological approach

N
U - assumes psychical cause this drug therapy treatment
R
D
S- includes key features FORCE

20

Weaknesses of the biological approach

N - general principles, ignores Individual difference
U
R - ignores other explanations, reductionist
D - doesn’t acknowledge free will thus deterministic