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Schizophrenia
Classification and diagnosis




Biological explanations




Psychological explanations




Biological treatments




Psychological treatments

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Classification and diagnosis of schizophrenia- A01

A01- Schizophrenia is a mental health disorder which is characterised by a disruption in a
person's thoughts, emotions, speech and they lose contact with reality.

A01- Classification is the act of distributing illnesses into categories of the same type

A01- Diagnosis is the recognition…

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A01- Boyle (1990) and Bentall (1988) have suggested that the concept of schizophrenia is
neither reliable nor valid and so the diagnosis is not clinically or scientifically useful. So this
suggests schizophrenia shouldn't exist and therefore no diagnosis should exist.

A01- A valid classification system should be able to predict…

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Classification and diagnosis of schizophrenia- A02/A03

A02- The classification systems were developed 50 years ago but it is revised several times
to reflect both changing views in psychiatric practice and new research evidence this suggest
that the manuals are not era dependent so we can use them at all times.…

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A02- Whaley (2001) found inter-rater reliability correlations in the diagnosis of schizophrenia
as low as 0.11. This shows that the reliability of the diagnosis of schizophrenia is really low so
the manuals need to change or more need to be made.
A02- certain ethnic groups are more likely to be…

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A01- Schizophrenia is a mental health disorder which is characterised by a disruption in a person's
thoughts, emotions, speech and they lose contact with reality.

A01- the Genetic explanation of Schizophrenia proposes that the disorder is hereditary ­ it runs in
families.

A01- family studies show that the risk of…

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A01- Risk to the general population of developing schizophrenia is only 1%

A01- According to the dopamine hypothesis excess levels of the neurotransmitter dopamine is the
cause of the disorder.

A01- Neurotransmitters are the chemical messengers that transmit impulses across synapses
between neurons.

A01- Post mortems and PET scans show…

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SCHIZOPHRENIA BILOGICAL EXPLANATIONS ­ A02/A03

A02- If there was no genetic link then there should be no difference in the level of risk between first
degree relatives and the public.

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A02- the fact that concordance rates increased with genetic relatedness may be explained by the
fact that families are likely to spend more time together which means environmental factors may be
influenced .

A02- The high concordance rate in MZ twins may be due to the fact that MZ twins…

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A02- Davis et al (1991) argues that the dopamine hypothesis is too simplistic because high levels of
dopamine were not found in all schizophrenics this shows that other factors cause schizophrenia.

A02- One of the most commonly used theories because it can be proved empirically so it's more
convincing.

A02-…

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