Abstract：
:In the area of abilities testing, one issue of continued dissent is whether abilities are best conceptualized as manifestations of a single underlying general factor or as reflecting the combination of multiple traits that may be dissociable. The fact that diverse cognitive tests tend to be positively correlated has been taken as evidence for a single general ability or "g" factor. In the present study, simulations of test performance were run to evaluate the hypothesis that multiple independent abilities that affect test performance in a consistent manner will produce a positive manifold. Correlation matrices were simulated from models using either one or eight independent factors. The extent to which these factors operated in a consistent manner across tests (i.e., that a factor that facilitates performance on one test tends to facilitate performance on other tests) was manipulated by varying the mean value of the randomly selected weights. The tendency of both a single factor and eight independent factors to produce positive correlations increased as the randomly selected weights operated in a more consistent fashion. Thus the presence of a positive manifold in the correlations between diverse cognitive tests does not provide differential support for either single factor or multiple factor models of general abilities.
journal_name
J Clin Exp Neuropsycholjournal_title
Journal of clinical and experimental neuropsychologyauthors
McFarland DJdoi
10.1080/13803395.2011.645018subject
Has Abstractpub_date
2012-01-01 00:00:00pages
378-84issue
4eissn
1380-3395issn
1744-411Xjournal_volume
34pub_type
杂志文章abstract：:The Useful Field of View test (UFOV(1)) is a measure of processing speed that predicts driving performance and other functional abilities in older adults. In comparison to a number of other visual and cognitive measures, the UFOV measure has consistently been found to be the strongest predictor of motor vehicle crashe...
journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
pub_type： 临床试验,杂志文章
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journal_title：Journal of clinical and experimental neuropsychology
pub_type： 临床试验,杂志文章
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journal_title：Journal of clinical and experimental neuropsychology
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更新日期：1988-08-01 00:00:00
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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更新日期：2009-02-01 00:00:00
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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更新日期：2012-01-01 00:00:00
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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更新日期：1990-03-01 00:00:00
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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journal_title：Journal of clinical and experimental neuropsychology
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abstract：INTRODUCTION AND OBJECTIVES:Many women report diminished memory function during the second or third trimesters of pregnancy, but objective neuropsychological tests often fail to show any decrement in performance. The present paper systematically reviews published studies that have investigated this phenomenon over the ...
journal_title：Journal of clinical and experimental neuropsychology
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