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ERIC Number: ED189109
Record Type: RIE
Publication Date: 1980-Apr
Reference Count: 0
A Design for Linking Tests of a Multi-Level, Multi-Form Achievement Series.
Lenke, Joanne M.; Canner, Jane M.
Traditionally, comparable content-area forms and levels of a multi-level, multi-form achievement test series have been equated using the equipercentile method. There is some evidence to indicate, however, that better procedures are needed. A linking procedure is being used to equate simultaneously 40 different test forms of an achievement test: four parallel test forms at each of ten levels of difficulty. The application of this linking procedure provides an efficient means of equating tests and has implications for evaluating the effectiveness of Rasch model procedures for scaling and equating. Tests are equated by a Rasch model strategy: two samples of persons respond to two sets of items; the sets share a common subset of items, which presumably have the same average item difficulty on both tests. (Author/CP)
Publication Type: Speeches/Meeting Papers; Reports - Research
Education Level: N/A
Authoring Institution: N/A
Identifiers: Rasch Model; Test Linking
Note: Paper presented at the Annual Meeting of the National Council on Measurement in Education (Boston, MA, April 8-10, 1980).