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Fischer, Gerhard H. – Psychometrika, 1989
The linear logistic model with relaxed assumption is extended to designs with any number of time points or with different sets of items presented on different occasions, provided that one unidimensional subscale is available per latent trait. A sample application is presented. (SLD)
Descriptors: Data Interpretation, Equations (Mathematics), Estimation (Mathematics), Item Response Theory
Wegner, Toni Giuliano; Ree, Malcolm James – 1985
In the late 1970s, the Department of Defense requested that the reference population for the Armed Services Vocational Aptitude Battery (ASVAB) be changed and updated to reflect the current youth population. Analyses of new data collected in 1980 indicated that speeded subtest scores of the new sample were atypically low and that the sample might…
Descriptors: Adults, Answer Sheets, Armed Forces, Data Analysis