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Algorithms	2
Test Items	2
Computer Simulation	1
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Factor Analysis	1
Item Response Theory	1
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Psychometrika

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Chang, Chih-Hsin	1
Liou, Michelle	1
Shapiro, Alexander	1

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Reports - Research	1

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Weighted Minimum Trace Factor Analysis.

Peer reviewed

Shapiro, Alexander – Psychometrika, 1982

Minimum trace factor analysis has been used to find the greatest lower bound to reliability. This technique, however, fails to be scale free. A solution to the scale problem is proposed through the maximization of the greatest lower bound as the function of weights. (Author/JKS)

Descriptors: Algorithms, Estimation (Mathematics), Factor Analysis, Psychometrics

Constructing the Exact Significance Level for a Person-Fit Statistic.

Peer reviewed

Liou, Michelle; Chang, Chih-Hsin – Psychometrika, 1992

An extension is proposed for the network algorithm introduced by C.R. Mehta and N.R. Patel to construct exact tail probabilities for testing the general hypothesis that item responses are distributed according to the Rasch model. A simulation study indicates the efficiency of the algorithm. (SLD)

Descriptors: Algorithms, Computer Simulation, Difficulty Level, Equations (Mathematics)