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Covariation of Intraindividual Variability in Cognitive Speed and Cognitive Performance across Young, Middle, and Older Adulthood
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Bielak, Allison A. M.; Anstey, Kaarin J. – Developmental Psychology, 2019
Intraindividual variability (IIV) in cognitive speed, or moment-to-moment changes in ability, is a developmental phenomenon indicative of neurological integrity that increases gradually across adulthood. Past research has shown that IIV negatively covaries with cognitive performance, in which higher IIV at one occasion is associated with poorer…
Descriptors: Cognitive Processes, Individual Differences, Cognitive Ability, Adult Development
Exploring the Dimensionality of Digit Span
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Bowden, Stephen C.; Petrauskas, Vilija M.; Bardenhagen, Fiona J.; Meade, Catherine E.; Simpson, Leonie C. – Assessment, 2013
The Digit Span subtest from the Wechsler Scales is used to measure Freedom from Distractibility or Working Memory. Some published research suggests that Digit Span forward should be interpreted differently from Digit Span backward. The present study explored the dimensionality of the Wechsler Memory Scale-III Digit Span (forward and backward)…
Descriptors: Short Term Memory, Cognitive Tests, Factor Analysis, Correlation
Measurement Invariance of Core Cognitive Abilities in Heterogeneous Neurological and Community Samples
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Bowden, Stephen C.; Cook, Mark J.; Bardenhagen, Fiona J.; Shores, E. Arthur; Carstairs, Jane R. – Intelligence, 2004
Confirmatory factor analysis of Australian adaptations of combined Wechsler Adult Intelligence Scale-Revised (WAIS-R) and Wechsler Memory Scale-Revised (WMS-R) scores was conducted in a sample of 277 participants undergoing investigation for neurological disorders. The best-fitting model was a six-factor model representing the latent abilities of…
Descriptors: Cognitive Ability, Factor Analysis, Neurological Impairments, Measures (Individuals)
The Wechsler Memory Scale: A Review of Research.
Ivison, David – Psychological Test Bulletin, 1990
Research on the standardization, reliability, validity, factor structure, and subtests of the Wechsler Memory Scale (WMS) (1945) and its revised version (1987) is reviewed. Much research relating to the WMS appears to be relevant to the revised version. Use of the instrument in Australia is discussed. (SLD)
Descriptors: Adults, Cognitive Tests, Diagnostic Tests, Factor Structure