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What Can the WISC-R Measure?
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Conger, Anthony J.; And Others – Applied Psychological Measurement, 1979
The WISC-R was investigated by using measures of profile (multivariate) reliability to determine its most reliable dimensions and the precision and similarity of the multivariate structure across age groups. The structure of the WISC-R subscales was stable across age groups. Two strategies for the interpretation of WISC-R profiles are offered.…
Descriptors: Age Differences, Elementary Secondary Education, Factor Structure, Intelligence
Estimating Generalizability to a Latent Variable Common to All of a Scale's Indicators: A Comparison of Estimators for Omega[subscript h]
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Zinbarg, Richard E.; Yovel, Iftah; Revelle, William; McDonald, Roderick P. – Applied Psychological Measurement, 2006
The extent to which a scale score generalizes to a latent variable common to all of the scale's indicators is indexed by the scale's general factor saturation. Seven techniques for estimating this parameter--omega[hierarchical] (omega[subscript h])--are compared in a series of simulated data sets. Primary comparisons were based on 160 artificial…
Descriptors: Computation, Factor Analysis, Reliability, Correlation
A Psychometric Investigation of the Survey of Study Habits and Attitudes.
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Bray, James H.; And Others – Applied Psychological Measurement, 1980
The reliability of the four-factor model of the survey of study habits and attitudes (SSHA) was investigated. The reliabilities of the scales were marginal as measured by coefficient alpha. The hierarchical model of the SSHA was not supported by confirmatory factor analysis. (Author/BW)
Descriptors: Factor Analysis, Factor Structure, Higher Education, Learning Processes