A Note on Vertical Equating via the Rasch Model for Groups of Quite Different Ability and Tests of Quite Different Difficulty.

Slinde, Jeffrey A.; Linn, Robert L.

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ERIC Number: EJ218769

Record Type: Journal

Publication Date: 1979

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A Note on Vertical Equating via the Rasch Model for Groups of Quite Different Ability and Tests of Quite Different Difficulty.

Slinde, Jeffrey A.; Linn, Robert L.

Journal of Educational Measurement, v16 n3 p159-65 Fall 1979

The Rasch model was used to equate reading comprehension tests of widely different difficulty for three groups of fifth grade students of widely different ability. Under these extreme circumstances, the Rasch model equating was unsatisfactory. (Author/CTM)

Descriptors: Academic Ability, Bias, Difficulty Level, Equated Scores, Intermediate Grades, Mathematical Models, Reading Tests, Research Design, Sampling, Student Characteristics, Test Items

Publication Type: Journal Articles; Reports - Research

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Language: English

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