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Biological Model of Abnormality The Biological model suggests there are four possible causes of mental illness, the subject's genes, biochemistry, infection and neuroanatomy. Neuroanatomy, or the nervous system, could be to blame for abnormality, because many Schchizophrenics have irregularly shaped brains comparison to normal people. Yet it is not clear if this is a cause or effect of the illness, all we know is that there is a correlation. There is also a correlation between schizophrenics and biological abnormalities, like high amounts of dopamine. Biochemical factors could be to blame for being mentally ill due to imbalances in their brain chemistry, such as too much or too little of a particular neurotransmitter. These are chemicals which transmit nerve impulses from one synapse to another. Infection could be to blame for abnormality, due to germs, bacteria and viruses. An example of this is with Syphilis which sometimes leads to brain...

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