About 92 percent of the children studied had stable, organized cognitive structures for the experimental stimuli while an analysis of the sorting data indicated that only 30 percent of the children had stable structures. (Author/DEP)

Two sets of real sorting data from 50 college students are used to compare results of multidimensional scaling of raw co-occurrence frequencies or dissimilarity measures (D) and profile distances (delta) to determine which yields a better representation of the underlying structure of 2 sets of stimuli. Slight differences are discussed. (SLD)