ERIC Number: ED347191
Record Type: RIE
Publication Date: 1992-Apr
Reference Count: 0
Rank-Order and Paired Comparisons as the Basis for Measurement.
Linacre, John M.
Three case studies are presented demonstrating the application of straight-forward Rasch techniques to rank order data. Paired comparisons are the simplest form of rank ordering. A consumer preference test with 56 pairs of cups of coffee tasted by each of 26 consumers illustrates analysis of these rankings. When subjects are allowed the option of "no difference," an approach analogous to a rating scale is used. Data from a study by A. Springall (1973) with about 28 assessors judging the flavor strength of a product illustrate analysis of the situation in which ties are allowed. A convenient method of constructing measures from rank orders is to regard the rankings as ordered categories on a rating scale. Data from D. E. Critchlow (1985) illustrate partial rankings of three top choices of crackers by 22 small boys and 16 mothers. These approaches demonstrate methods of producing measures from rankings by judges. Four figures and six tables present details of the analyses. A nine-item list of references and three appendixes of preference data are included. (SLD)
Publication Type: Reports - Evaluative; Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: N/A
Identifiers: Interval Scales; Paired Comparisons; Preference Data; Rank Order; Rasch Model; Taste Preference
Note: Paper presented at the Annual Meeting of the American Educational Research Association (San Francisco, CA, April 20-24, 1992).