Biological approach assumptions & explanations
- Created by: tors2000
- Created on: 18-11-17 18:57
View mindmap
- Biological approach
- Assumption 1
- Behaviour can be explained in terms of different areas of the brain
- Brain contains Cerebral cortex = 4 lobes
- Frontal lobe
- Responsible or personality & thinking
- Parietal lobe
- responsible for making sense of the world
- Occipital lobe
- Responsible for vision
- Temporal lobe
- Responsible for hearing & language
- DAMAGE to ANY of these lobes can result in a CHANGE of BEHAVIOUR
- Frontal lobe
- Brain contains Cerebral cortex = 4 lobes
- Example in psychology
- Raine Et Al: brain abnormalities
- Limbic system made up : amygdala, corpus callosum & thalamus
- These 3 structures linked to violent behaviour
- Low activity, associated with a lack of inhibition for violent behaviour, fearlessness & failure to see the negative effects of violence
- He compared the brain scans of 41 murderers with non murderers by using PET scans.
- Murderers had low activity in these structures.
- Limbic system made up : amygdala, corpus callosum & thalamus
- These 3 structures linked to violent behaviour
- Low activity, associated with a lack of inhibition for violent behaviour, fearlessness & failure to see the negative effects of violence
- Limbic system made up : amygdala, corpus callosum & thalamus
- Murderers had low activity in these structures.
- Limbic system made up : amygdala, corpus callosum & thalamus
- Raine Et Al: brain abnormalities
- Behaviour can be explained in terms of different areas of the brain
- Assumption 2
- behaviour can be explained in terms of neurotransmitters
- Nervous system made up of neurons
- End of these neurons are dendrites which give them flexibility to connect with other neurons
- Neurons communicate at the synapse, messages are sent by chemical messengers (neurotransmitters)
- Neurotransmitters are released by presynaptic vesicles.
- Neurons communicate at the synapse, messages are sent by chemical messengers (neurotransmitters)
- End of these neurons are dendrites which give them flexibility to connect with other neurons
- Dopamine is associated with rewards & schizophrenia
- Serotonin is associated with arousal & depression
- Adrenaline is associated with arousal
- Nervous system made up of neurons
- Example in psychology
- Neurotransmitters &mental health
- Serotonin plays a role in our mood, appetite & sleep
- Too little serotonin found in those who suffer from depression
- Anti-depressant medications work by increasing he availability of serotonin at post synaptic receptor sites
- High levels of dopamine is associated with schizophrenia
- Drugs that block dopamine activity = reduced symptoms
- Serotonin plays a role in our mood, appetite & sleep
- Neurotransmitters &mental health
- behaviour can be explained in terms of neurotransmitters
- Assumption 3
- Behaviour can be explained in terms of evolutionary influences
- Evolve means to change with time
- Human behaviour has changed over mils of yrs, it has adapted to it's individual environments
- This theory of adaptiveness is based on Darwin's theory of natural selection
- Natural selection is that genetic behaviour that enhances an individuals chance of survival &reproduction will be passed onto the next generation.
- Natural selection takes a part at the level of our genes
- This theory of adaptiveness is based on Darwin's theory of natural selection
- Example in psychology
- Biological preparedness
- evolutionary psychologists suggest that certain fears are adaptive behaviours that help our ancestors to survive
- Seligman prosed the concept of biological prepardness as an inherited predisposition to fear certain types of animals eg snakes
- Matchett & Davey linked animal fears to contamination risk & likelihood of attack
- They found that both predatory animals & animals associated with disgust naturally elicited fear in humans
- Matchett & Davey linked animal fears to contamination risk & likelihood of attack
- Biological preparedness
- Behaviour can be explained in terms of evolutionary influences
- Assumption 1
Comments
No comments have yet been made