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Applied Measurement in…1
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Use of Restricted Item Response Theory Models for Examining the Stability of Item Parameter Estimates over Time.
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Stone, Clement A.; Lane, Suzanne – Applied Measurement in Education, 1991
A model-testing approach for evaluating the stability of item response theory item parameter estimates (IPEs) in a pretest-posttest design is illustrated. Nineteen items from the Head Start Measures Battery were used. A moderately high degree of stability in the IPEs for 5,510 children assessed on 2 occasions was found. (TJH)
Descriptors: Comparative Testing, Compensatory Education, Computer Assisted Testing, Early Childhood Education