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Modeling Responses and Response Times in Tests with the Hierarchical Model and the Three-Parameter Lognormal Distribution
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Ranger, Jochen; Kuhn, Jörg Tobias; Ortner, Tuulia M. – Educational and Psychological Measurement, 2020
The hierarchical model of van der Linden is the most popular model for responses and response times in tests. It is composed of two separate submodels--one for the responses and one for the response times--that are joined at a higher level. The submodel for the response times is based on the lognormal distribution. The lognormal distribution is a…
Descriptors: Reaction Time, Tests, Statistical Distributions, Models
True Score Theory: A Paradox
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Ramsay, J. O. – Educational and Psychological Measurement, 1971
The consequences of the assumption that the expected score is equal to the true score are shown and alternatives discussed. (MS)
Descriptors: Psychological Testing, Statistical Analysis, Test Reliability, Testing
Relating Factor Scores to External Variables
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Khan, S. B. – Educational and Psychological Measurement, 1973
Purpose of this note is to point to an obvious but useful relationship by which estimation of individual factor scores can be omitted when obtaining relationships between factors and an external set of variables. (Author)
Descriptors: Factor Analysis, Mathematical Applications, Measurement Techniques, Psychological Testing
A Computer Program for Factor Analyzing up to 450 Variables (MAXVAR)
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Howarth, Edgar; Braun, Peter H. – Educational and Psychological Measurement, 1972
Descriptors: Computer Programs, Data Processing, Factor Analysis, Psychological Testing
Can Percentiles Replace Raw Scores in the Statistical Analysis of Test Data?
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Zimmerman, Donald W.; Zumbo, Bruno D. – Educational and Psychological Measurement, 2005
Educational and psychological testing textbooks typically warn of the inappropriateness of performing arithmetic operations and statistical analysis on percentiles instead of raw scores. This seems inconsistent with the well-established finding that transforming scores to ranks and using nonparametric methods often improves the validity and power…
Descriptors: Statistical Analysis, Psychological Testing, Raw Scores, Evaluation Methods
The Reliability of Differences between Linear Regression Weights in Applied Differential Psychology
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Schmidt, Frank L. – Educational and Psychological Measurement, 1972
Descriptors: Mathematical Models, Multiple Regression Analysis, Predictor Variables, Psychological Testing
A Short Cut Toward A Submatrix Containing Only "Disturbed" Individuals
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McQuitty, Louis L. – Educational and Psychological Measurement, 1971
Descriptors: Classification, College Students, Concept Formation, Discriminant Analysis