Issues Surrounding Classification and Diagnosis of Schizophrenia
- Created by: The Shrew
- Created on: 20-04-15 14:11
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- Classification and Diagnosis
- Co-morbidity
- Both depression and Sz exhibit low motivation
- Sim et al
- 32% of 142 hospitalized schizophrenia patients had an additional disorder
- Reductionist- Schizotypy is a continuum
- Chapman et al
- Normal people high in schizotypy more likely to develop psychosis over the next 10 years
- Chapman et al
- Reductionist- Schizotypy is a continuum
- Chapman et al
- Normal people high in schizotypy more likely to develop psychosis over the next 10 years
- Chapman et al
- 2 diagnostic routes
- Assumes mental disorders are distinct
- Co-morbidity
- Both depression and Sz exhibit low motivation
- Sim et al
- 32% of 142 hospitalized schizophrenia patients had an additional disorder
- Co-morbidity
- DSM-5
- ICD-10
- Jakobson et al
- DSM-5 and ICD-10 have good agreement in comparison with Operational Criteria Checklist
- Assumes mental disorders are distinct
- Assumes mental disorders are distinct
- Jakobson et al
- DSM-5 and ICD-10 have good agreement in comparison with Operational Criteria Checklist
- Modifications from DSM-IV to DSM-5
- No longer case that only one symptom is required if it's bizarre enough
- Need at least two
- Has to be present for at least one month
- Simplifies Criterion A
- Tandon et al
- Enhances clinical unity and validity
- Bell et al
- Hard to distinguish between 'bizarre' and 'not bizarre'
- Tandon et al
- Adds 'history of other communication disorder of childhood onset' rather than just 'autism'
- Dyck et al
- Prevalence of other communication disorders
- Dyck et al
- No longer case that only one symptom is required if it's bizarre enough
- Rosenhan
- 8 health confederates attempt admission to 12 psychiatric hospitals- claimed to hear voices
- 7 diagnosed with Sz
- Took 19 days for discharge after claiming they were better- classed as 'in remission'
- 7 diagnosed with Sz
- Staff told pseudo-patients would attempt admission
- Not ture.....
- One staff member turned away 41 genuine pateints
- Not ture.....
- Ecological Validity?
- Kety
- Disorder feigned with abnormal behavior- should have been diagnosed
- Fake admission rare occurrence- diagnosis of Sz in remission uncommon- released relatively quickly
- Kety
- 8 health confederates attempt admission to 12 psychiatric hospitals- claimed to hear voices
- Ethnic Bias
- McGovern and Cope
- 2/3rds of Uk's psychotic patients African-Carribean
- Keith et al
- USA Sz occurence
- 2.1% for African- Americans
- 1.4% White Americans
- Controlled for social factors- no change!
- Lower Class- 1.9%
- Middle Class- 0.9%
- Upper Class- 0.4%
- USA Sz occurence
- McGovern and Cope
- Co-morbidity
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