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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
Boldt, R. F. – 1994
The comparison of item response theory models for the Test of English as a Foreign Language (TOEFL) was extended to an equating context as simulation trials were used to "equate the test to itself." Equating sample data were generated from administration of identical item sets. Equatings that used procedures based on each model (simple…
Descriptors: Comparative Analysis, Cutting Scores, English (Second Language), Equated Scores
Way, Walter D.; McKinley, Robert L. – 1991
Two procedures were developed to determine whether examinees in a given test center were affected by a testing irregularity on the Listening Comprehension section of the Test of English as a Foreign Language (TOEFL). One approach employed analysis of covariance (ANCOVA) on Listening Comprehension (Section 1) means using scores on Structure and…
Descriptors: Analysis of Covariance, Bayesian Statistics, English (Second Language), Language Proficiency
Hicks, Marilyn M. – 1989
Methods of computerized adaptive testing using conventional scoring methods in order to develop a computerized placement test for the Test of English as a Foreign Language (TOEFL) were studied. As a consequence of simulation studies during the first phase of the study, the multilevel testing paradigm was adopted to produce three test levels…
Descriptors: Adaptive Testing, Adults, Algorithms, Computer Assisted Testing
