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Direct linkRaykov, Tenko; Marcoulides, George A.; Huber, Chuck – Measurement: Interdisciplinary Research and Perspectives, 2020
It is demonstrated that the popular three-parameter logistic model can lead to markedly inaccurate individual ability level estimates for mixture populations. A theoretically and empirically important setting is initially considered where (a) in one of two subpopulations (latent classes) the two-parameter logistic model holds for each item in a…
Descriptors: Item Response Theory, Models, Measurement Techniques, Item Analysis
Download full textPIERCE-JONES, JOHN; AND OTHERS – 1966
A 15-MONTH EVALUATION RESEARCH STUDY OF THE 1965 SUMMER HEAD START PROGRAMS WAS CONDUCTED THROUGHOUT THE STATE OF TEXAS. A SCHEMATIC MODEL OF INTERACTING FACTORS OPERATING THROUGH HEAD START PROGRAMS TO PRODUCE AND PREDICT CHANGES IN EDUCATIONAL DEVELOPMENT AND IN OUT-OF-SCHOOL ENVIRONMENT WAS DEVELOPED. THIS MODEL GENERATED THE EMPIRICAL…
Descriptors: Behavior Change, Behavioral Science Research, Cognitive Development, Educational Environment
