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CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA




1. CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA
WHAT IS SCHIZOPRHRENIA?
A severe mental disorder characterised by a profound disruption of cognition and emotion. This
affects a person's language, thought, perception & sense of self.
Detachment from reality in which the sufferer experiences hallucinations, delusions and a…

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CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA




Persecution A worrying one in which they think people are out to get them. (Also
common in sleep deprivation studies)

Reference The person believes that characters in a book, songs or in films are
actually referring to them.
MAJOR SYMPTOMS: two or more of the…

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CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA




CLASSIFICATION ISSUES

SZASZ'S OBJECTIONS TO CLASSIFICATION AND CONSEQUENTEY LABELLING
Szasz (1970s ­ 1990s) argued that the label `mentally ill' removes the responsibility for behaviour
from the individual. The label of mentally ill was more stigmatising than the term `bad'. He believed
that those in power…

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CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA




CLASSIFICATION ISSUES OF RELIABILITY AND VALIDIITY
RELIABILITY ­ the extent to which psychiatrists can agree on the same diagnosis when independently
assessing patients. Reliability refers to the consistency of a diagnosis across repeated measurements

PROBLEMS WITH RELIABILITY
COMORBIDITY
This describes people who suffer from two…

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CLASSIFICATION & DIAGNOSIS OF SCHIZOPRHENIA




PROBLEMS WITH VALIDITY
PREDICTIVE VALIDITY
Is the extent to which the diagnosis can accurately predict the development and prognosis of
schizophrenia. If a disorder has high predictive validity then this is desirable as it would be clear how
the disorder would develop.
SCHNEIDER (1959) ­…

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