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Biological approach Assumptions:
Human behaviour is strongly influenced by our genetic make up and our
genetic inheritance.

The central nervous system is essential for thought and behaviour to take
place. Structure of the brain can explain behaviour and thought.

Chemical processes in the brain are responsible for psychological functions in…

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The biological approach is deterministic as it ignores an individual's free will as all
thoughts, feelings and behaviour is due to your biological make-up.

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Method Strengths Weaknesses


Neurosurgery- manipulating the Allows precision and Ethical issues
brains structure ­ ablation and control
lesion Cause and effect

Damage to brain

Electrical Less harmful than Most research is done
stimulation-microelectrodes surgery on animals and
inserted to brain to stimulate therefore can't be
neurones More ethical generalised…


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