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Jung, Eunju; Liu, Kimy; Ketterlin-Geller, Leanne R.; Tindal, Gerald – Behavioral Research and Teaching, 2008
The purpose of this study was to develop general outcome measures (GOM) in mathematics so that teachers could focus their instruction on needed prerequisite skills. We describe in detail, the manner in which content-related evidence was established and then present a number of statistical analyses conducted to evaluate the technical adequacy of…
Descriptors: Item Analysis, Test Construction, Test Theory, Mathematics Tests
Peer reviewed Peer reviewed
Tindal, Gerald; And Others – Remedial and Special Education (RASE), 1987
The study examined the hypothesis that different evaluative interpretations of studies of special education effectiveness may be a function of the manner in which data are summarized and reported. Four metrics are compared including raw score, grade-equivalent score, z-score, and discrepancy index. Criteria for selecting metrics for program…
Descriptors: Disabilities, Elementary Secondary Education, Evaluation Methods, Grade Equivalent Scores