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Psychopathology (schizophrenia)




Biological explanation of schizophrenia: dopamine hypothesis

Describe (AO1)

The positive symptoms of schizophrenia are caused by too much activity in the
dopamine pathways. This is caused by having too many D2 receptors. Dopamine
neurons affect attention which could account for the disturbances in attention,
perception and thought processes.…

Page 2

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Psychopathology (schizophrenia)




/ Relationship to genes: genes and dopamine activity may be linked and
ultimate genes may be the cause of schizophrenia whilst dopamine activity
would be the proximate cause.

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