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Harper, Dean – Psychometrika, 1972
A procedure is outlined showing how the axiom of local independence for latent structure models can be weakened. (CK)
Descriptors: Algorithms, Factor Analysis, Factor Structure, Mathematical Applications
Peer reviewed Peer reviewed
Holman, Eric W. – Psychometrika, 1972
Two models for psychological distances, the hierarchical clustering model and the multidimensional Euclidean model, are compared to see how they relate to each other. (Author/RK)
Descriptors: Geometric Concepts, Mathematical Applications, Mathematical Models, Multidimensional Scaling
Peer reviewed Peer reviewed
Bloxom, Bruce – Psychometrika, 1972
Special cases of the factor analysis model are developed for four selection situations. Methods are suggested whereby parameters in each case can be estimated using a maximum likelihood procedure recently developed by Joreskog. (Author)
Descriptors: Data Analysis, Factor Analysis, Hypothesis Testing, Mathematical Applications
Peer reviewed Peer reviewed
Samejima, Fumiko – Psychometrika, 1972
This paper proposes a general model for free-response data collected for measuring a specified unidimensional psychological process; systematizes situations which vary with respect to the scoring level of items; and finds out general conditions for the operating characteristic of an item response category to provide a unique maximum likelihood…
Descriptors: Mathematical Applications, Mathematical Models, Mathematics, Measurement Techniques