Document Detail


MedLine Citation:
PMID:  3711877     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Based on test comparisons involving psychotic depressives and chronic paranoid schizophrenics, Carter (J. Nerv. Ment. Dis. 174: 336-341, 1986) inferred that cognitive disorder may reflect a general psychosis factor rather than a differential diagnostic marker. Review of the design and analysis raises methodological and conceptual issues that obviate such interpretation. Problems include absence of control for IQ and chronicity of illness, sample bias incurred by selectively matching groups for education, use of parametric statistics on ordinal data, measures that do not differentially assess cognitive deficit, plausible alternative explanations for nonsignificant outcome, and inadequate data base for generalizing about larger diagnostic groups or psychosis itself. Significant differences found by Carter and others suggest, instead, some fundamental distinctions in the nature if not extent of cognitive disorder in these two groups. It was proposed that a general psychosis factor may be a pervasive interfering variable that obscures diagnostic differences in cognition and thus needs to be rooted out by proper statistical or research design.
Authors:
S R Kay
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of nervous and mental disease     Volume:  174     ISSN:  0022-3018     ISO Abbreviation:  J. Nerv. Ment. Dis.     Publication Date:  1986 Jun 
Date Detail:
Created Date:  1986-07-09     Completed Date:  1986-07-09     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0375402     Medline TA:  J Nerv Ment Dis     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  342-7     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Chronic Disease
Cognition Disorders / diagnosis,  psychology
Depressive Disorder / diagnosis,  psychology*
Diagnosis, Differential
Humans
Intelligence
Psychiatric Status Rating Scales
Psychological Tests*
Research Design / standards
Schizophrenia, Paranoid / diagnosis,  psychology*
Statistics as Topic

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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