Supported is the argument that cognitive development should not be studied alone, in isolation from wider questions about the history of thought in the scientific community. Interest in the topic resulted from dissatisfaction with British secondary school Language-for-Learning movement assertions that learners' active use of their own speech and…

Twenty-five eleventh grade classes were taught two social studies concepts, sovereignty and comparative advantage, using written or oral methods. Methods differed in their use and sequence of examples to explicate definitions. Finds using examples increased concept attainment. Suggests sequence was important for the more complex, relational…