A task was developed to differentiate the reasoning of elementary school students in fifth, sixth, and seventh grades. Subjects completed 16 matrices containing two, three, or four dimensions and varying in the embeddedness of the dimensions. They also solved a formal operational task assessing ability to isolate, exclude, and include variables.…

Describes a study conducted in a Hong Kong primary school that compared the effects of learning LOGO programing with a process-oriented approach and a content-oriented approach to problem-solving skills. Transfer of training to nonprograming problem solving is discussed, and instruments used to assess students are explained. (33 references) (LRW)