Klauer and Phye’sCognitive Training for Chil-dren(Cognitive training for children: a developmental pro-gram of inductive reasoning and problem solving. Hogrefe &Hogrefe Publisher, Kirkland,1994) provides instruction ininductive reasoning through a sequence of 120 illustrationsfollowing a prescribed two-way categorization (a) attributesof objects versus relations between objects, and (b) similari-ties or differences versus both similarities and differences inattributes or relations. While the program’s effectivity hasbeen established, its prescribed categorization of problemshas yet to be validated. If training performance is in accor-dance with the prescribed categorization, then performancepatterns should be more similar for problems in the same thanin different categories. In the current research, correlations ofperformance between problem categories were used as simi-larity measures in multidimensional scaling. The resultingsolution yielded the attribute–relation and similarity–differ-ence dimensions thus showing that performance reflectsproblem complexity. Visual salience, however, may overrideproblem complexity, as suggested by the finding that thematrix arrangement of objects facilitated training in thealgorithmically complex similarity-and-difference problems.The use of everyday-life objects as opposed to abstract objectsalso was shown to facilitate inductive reasonig

• Categories of Illustrated Problems for Training Childrenin Inductive Reasoning