First 326 words of the document:
Cognitive explanation of schizophrenia
States that biological factors cause the initial sensory explanations associated
with schizophrenia but further symptoms are as a result of a person trying to
make sense of the stimuli. They first hear voices but when they try to confirm
these by talking to others and others can't confirm that these voices are true the
individual thinks they are hiding the truth from them. This leads to individuals
rejecting feedback from those around them and then they develop delusional
beliefs that they are being manipulated or persecuted.
There is a link between biological and cognitive causes which is supported
by studies which shows high level of dopamine in the prefrontal cortex is
linked to a poor working memory in schizophrenics
/ CBT is successful at reducing positive symptoms. This suggests that the
explanation is valid if the treatment works. However, the evidence is weak
as most studies had the extraneous variable of medication.
/ Reductionist- whilst it does include other explanations such as the
biological explanation, it doesn't include others such as the psychodynamic
explanation. Therefore we can only gain a limited understanding of the
causes of schizophrenia. However, as it is reductionist it means that one
factor is well understood.
Only accounts for some symptoms- delusions and hallucinations as well as
abnormal behaviour and alogia are accounted for, so we don't know the
causes of the other symptoms. However it explains more symptoms than the
Diathesis stress model applies to this explanation as the cognitive
explanation states that a biological factor (hallucinations) along with an
environmental factor (reactions from others) can cause schizophrenia. The
model also states a biological and environmental factor is needed to cause
schizophrenia. Therefore it supports the cognitive explanation.