the biological approach

  • Created by: IvyVega
  • Created on: 25-05-18 15:22
everything psychological is at first biological
if we want to fully understand human behaviour we must look to biological structures and processes within the body, such as genes, neurochemistry and the nervous system.
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behaviour has a genetic and neurochemical basis.
behaviours are inherited in the same way as physical characteristics such as height or eye colour. neurochemistry also explains behaviour.
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the mind and body are one and the same
from a biological perspective, the mind lives in the brain- meaning that all thoughts, feelings and behaviour ultimately have a physical basis. this is in contrast to the cognitive approach which sees the mind as separate from the brain.
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twin studies are used to investigate the genetic basis of behaviour
concordance rates between twins are calculated- the extent to which twins share the same characteristic. higher concordance rates among identical twins than non-identical twins is evidence of a genetic basis.
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the difference between genotype and phenotype
a persons genotype is their actual genetic make-up. phenotype is the way that genes are expressed through physical, behavioural and psychological characteristics. the expression of genotype is influenced by environmental factors.
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the theory of evolution is used by the biological approach to explain many aspects of behaviour.
any genetically determined behaviour that enhances survival and reproduction will be passed on to future generations. charles darwin propsed the theory of natural selection.
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strength 1- real-life application
increased understanding of biochemical processes in the brain has led to the development of psychoactive drugs that treat serious mental disorders. although these drugs are not effective for all patients, they have revolutionised treatment for many.
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limitation 1- based on a determinist
it sees behaviour as governed by internal, biological causes over which we have no control.
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strength 2- use of scientific methods of investigation
include scanning techniques and drug trails. it is possbile to accurately measure biological and neural processes in ways that are not open to bias. reliable data.
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Card 2

Front

behaviours are inherited in the same way as physical characteristics such as height or eye colour. neurochemistry also explains behaviour.

Back

behaviour has a genetic and neurochemical basis.

Card 3

Front

from a biological perspective, the mind lives in the brain- meaning that all thoughts, feelings and behaviour ultimately have a physical basis. this is in contrast to the cognitive approach which sees the mind as separate from the brain.

Back

Preview of the back of card 3

Card 4

Front

concordance rates between twins are calculated- the extent to which twins share the same characteristic. higher concordance rates among identical twins than non-identical twins is evidence of a genetic basis.

Back

Preview of the back of card 4

Card 5

Front

a persons genotype is their actual genetic make-up. phenotype is the way that genes are expressed through physical, behavioural and psychological characteristics. the expression of genotype is influenced by environmental factors.

Back

Preview of the back of card 5
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