A developmental model of mental activity is proposed, describing central processing skills that are metaphorical in nature. This metaphorical thinking, in which semantic fields and knowledge domains are juxtaposed to enable individuals to perceive similarities between prior knowledge and unfamiliar situations, enables individuals to develop toward…

This research attempted to expand Piaget's study of children's thinking to include the content and the development of their concepts of death and the impact of experience on those concepts. One hundred twenty-two, middle-class, native-born boys and girls, aged three through twelve years were interviewed. Concepts were found to be composed of nine…

This issue, part of an annual series prepared for Maryland educators, presents the problem solving aspect of learning behavior by reviewing some of the variables which affect how individuals confront intellectual problems. Selected studies and a bibliography which are helpful in developing instructional methods which take into account individual…