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Download full textHalperin, Silas – 1973
Factor loadings, used directly or as the basis of binary values, are not appropriate as weights to produce component scores from a rotated solution. A series of examples showing the results of an incorrect measurement of components is given. Several correlation matrices were taken from books on factor analysis and multivariate analysis. Each…
Descriptors: Correlation, Factor Analysis, Orthogonal Rotation, Research Reports
Bayuk, Robert J. – 1973
An investigation was conducted to determine the effects of response-category weighting and item weighting on reliability and predictive validity. Response-category weighting refers to scoring in which, for each category (including omit and "not read"), a weight is assigned that is proportional to the mean criterion score of examinees selecting…
Descriptors: Aptitude Tests, Correlation, Predictive Validity, Research Reports
Powell, J. C. – 1979
The educational significance of wrong answers on multiple choice tests was investigated in over 4,000 subjects, aged 7 to 20. Gorham's Proverbs Test--which requires the interpretation of a proverb sentence--was administered and repeated five months later. Four questions were addressed: (1) what can the pattern of answer choice, across age, using…
Descriptors: Age Differences, Cognitive Development, Cognitive Processes, Elementary Secondary Education
