Classification and diagnosis of schizophrenia

Lauren Jones7971
Mind Map by Lauren Jones7971, updated more than 1 year ago
Lauren Jones7971
Created by Lauren Jones7971 over 5 years ago


a level Psychology Mind Map on Classification and diagnosis of schizophrenia, created by Lauren Jones7971 on 01/20/2015.

Resource summary

Classification and diagnosis of schizophrenia
1 Reliability
1.1 Inter-rater reliability
1.1.1 AO1 the consistency of the measuring instrument CARSON the DSM-III had fixed the problem of inter-rater validity once and for all
1.1.2 AO2 WHALEY inter-rater reliability correlations in the diagnosis of Sz, as low as 0.11 REJECT-there is a lack of inter-rater reliability, contradicting CARSON COPELAND 69% of US psychiatrists diagnosed Sz with only 2% of British psychiatrists diagnosed Sz differences in DSM and ICD affect diagnosis. AO3-DSM is culturally biased
1.2 the degree to which different raters give consistent estimates of the same behaviour
1.3 Test-retest reliability
1.3.1 AO1 assesses the external consistency of the test WILKS ET AL the test-retest reliability was high when looking at screening tests for Sz
1.3.2 AO2 ROSENHAN there is difficulty in distinguishing between normality and and abnormality, once admitted patients became their illness PRESCOTT ET AL analysed test-retest of several measures of attention and information in 14 chronic Sz patients found that performances on these measures were stable over 6 months this shows high reliability AO3-longitudinal
2 Validity
2.1 does the diagnosis represent something real and distinct and measure what it claims to
2.2 comorbidity
2.2.1 AO1 presence of one or more additional disorders co-occuring with a primary disorder BUCKLEY comorbid depression occurs in 50% of patients, 47% also have a lifelong diagnosis of comorbid substance abuse, creating difficulties in the diagnosis/treatment
2.2.2 AO2 WEBER ET AL morbidity and mortality from general medical conditions are elevated among patients with Sz compared with general US population. >50% of those with Sz have one or more comorbid psychiatric or general medical conditions Supports-more than half Sz go on to have another disorder KESSLER ET AL only a minority of those with mental disorders were found to have received professional treatment during the proceeding 12 months. Those with comorbid disorders - more likely to receive treatment however comorbidiity can affect treatment shows that difficulties can occur
2.3 Predictive validity
2.3.1 AO1 the degree to which a test accurately predicts a critereon that will occur in the future
2.3.2 AO2 BENTALL ET AL Sz is not a useful scientific category as symptoms are also found in other mental disorders People with Sz don't always share the same prognosis therefore there is little predictive validity HARRISON social skills, academic achievement and family tolerance may influence prognosis All cases can be different and therefore lacks predictive validity and test-retest reliability is difficult to achieve
Show full summary Hide full summary


The Breakdown Model (Rollie & Duck 2006)
Cognitive Psychology - Capacity and encoding
Tess W
Social Psychology As level
Gurdev Manchanda
Success and failure of dieting
A level Computing Quiz
Zacchaeus Snape
Biological Definitions
Love through the ages
Biological Psychology - Stress
Gurdev Manchanda
History of Psychology
Biology AQA 3.2.5 Mitosis
Function and Structure of DNA
Elena Cade