Applied qualitative methods to assess students' interest in science to responses of 2,118 German students in grades 5 through 7 to items measuring interest. Each method (additive cluster analysis, multidimensional scaling, and latent class analysis) is considered qualitative because it supports a focus on the structure of interest. Each approach…

A three-way multidimensional scaling model is presented as a method for identifying classroom cliques, by simultaneous analysis of three variables (for example, chooser/choosen/criteria). Two scaling models--Carroll and Chang's INDSCAL and Lingoes' PINDIS--are presented and applied to two sets of empirical data. (CP)