Using a model for individual differences in multidimensional scaling, 16 concepts dealing with developmental psychology were scaled before and after a course. The criterion measure used was the instructor's position in the subject space. Implications of this methodology for educational evaluation are discussed. (Author/SE)

A general model for research in the concept of weight and other concepts is tested with second grade children. (Author/DEP)

Results of two studies using the Esper paradigm to determine development of rule application and discovery are reported. Subjects learned and generalized when rule and structure were provided, but there was little evidence of rule discovery. Manipulations of memory and attention facilitated learning, but only attention facilitated rule discovery.…

In 2 experiments, 261 middle school students processed an analogy and responded to factual and inferential target-domain questions in a study of variables that contribute to the formation of analogical misconceptions. Results of both experiments support a six-variable model of analogical misconception formation. (SLD)

This investigation provided empirical data and addressed theoretical issues regarding the Educational Set Scale (ESS) and theory. An expanded model is proposed and directions for future research are suggested. (Author/GK)