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Download full textTang, K. Linda; And Others – 1993
This study compared the performance of the LOGIST and BILOG computer programs on item response theory (IRT) based scaling and equating for the Test of English as a Foreign Language (TOEFL) using real and simulated data and two calibration structures. Applications of IRT for the TOEFL program are based on the three-parameter logistic (3PL) model.…
Descriptors: Comparative Analysis, Computer Simulation, Equated Scores, Estimation (Mathematics)
Way, Walter D.; Reese, Clyde M. – 1991
The use of two alternative item response theory (IRT) estimation models in the scaling and equating of the Test of English as a Foreign Language (TOEFL) was explored; and item scaling and test equating results based on these models were compared with results based on the three-parameter (3PL) model currently being used with the TOEFL. Models were…
Descriptors: Correlation, Equated Scores, Estimation (Mathematics), Goodness of Fit
Bejar, Isaac I. – 1985
The Test of English as a Foreign Language (TOEFL) was used in this study, which attempted to develop a new methodology for assessing the speededness of right-scored tests. Traditional procedures of assessing speededness have assumed that the test is scored under formula-scoring instructions; this approach is not always appropriate. In this study,…
Descriptors: College Entrance Examinations, English (Second Language), Estimation (Mathematics), Evaluation Methods
