A01 classification and diagnosis of schizophrenia Flashcards
A01
What are the common misconceptions of schizophrenia
That schizophrenics have split personality ir a multiple personality
What is schizophrenia
A severe mental disorder characterised by a profound disruption of cognition and emotion
What are the 2 section for the issues of clarification and diagnosis of schizophrenia
Reliability and validity
How can you measure reliability in terms of schizophrenia
Inter rater reliability and test retest reliability
What is inter rate reliability
Whether two independent assessors give similar diagnoses
What is teat retest reliability
Whether tests used to deliver these diagnoses are consistent over time
What is the classification system for psychiatric disorder that was introduced in 1980
DSM-III
Role of DSM-III in inter rater reliability
It’s a new classification system
A02
Who tested inter rater reliability
Carson
What did Carson fo and find
Reviewed the success of DSM-III
It fixed the problem of inter rater reliability
Overall what is the inter rate reliability like?
They had a reliable classification system that led to much agreement over who did and who didn’t have schizo
What is RBANS?
A cognitive screening test used in the diagnosis of schizo
A02
Who studied test retest reliability
Wilks et al
What did wilks et al do/find
Found the test retest reliability of RBANS test high at a correlation of .84
Overall what is the test retest reliability like
Good, RBANS is a good enough test reliable for classification and diagnosis of schizo
What is validity
Refers to the ability for a test to measure what it wants to measure
What is reliability
Refers to the consistency of a measuring instruments
Questionnaire
Scale etc
Who studied comorbidity
Buckley et al
What did Buckley et al do /find
Comorbidity depression occurs in 50% of patients
What is comorbidity
Example
Refers to the extent that 2 or more condition cooccur
Anxiety abd/or depression
With schizophrenia
Overall what can you conclude from comorbidity
That due to high levels of comorbidity
It created difficulties in the diagnosis of schizo
Decreases validity
Who tested whether positive or that negative symptoms were more useful for diagnosis
Klosterkotter et al
What did klosterkotter do/find
Assessed admission to a psychiatric unit
Found positive symptoms more useful for diagnosis than negative symptoms
This decreases validity
