Problem solving, recall, and mapping relations in isomorphic transfer and nonisomorphic transfer among preschoolers and elementary school children.

Analogical problem-solving processes were studied in 4 experiments using 5- and 7-move scheduling problems. Subjects were preschool and elementary school children. On each acquisition trial, the child heard a list of statements representing the exact series of moves necessary to solve the problem and was immediately asked to recall the list. Physical materials representing the problem were then produced and the child was asked to solve it. In transfer only setting/constraint information was provided prior to problem solving. In the first study, mapping processes were explored in nonisomorphic transfer tasks with different constraints and problem spaces. Mapping processes were very good, except when a feature of the base was mapped to a misleading cue in the transfer problems. The second study revealed that combining the problem-solving task with the recall task facilitated isomorphic transfer but not nonisomorphic transfer. The 2 remaining studies revealed that preschool children show excellent isomorphic transfer in both 5- and 7-move problems. The major developmental difference was in how the children ordered the propositions in their recall protocols. The findings were discussed in terms of problem spaces, flexibility of transfer, and developmental theory.