Development in children's representations of transformations and movements

Abstract

This study tested the hypothesis that fourth-grade children tend more than first-grade children to represent transformations as ordered series of beginning, middle, and end states. On 15 different tasks, children were presented an object state constructed by the experimenter (e.g., a ball of clay or a pipe cleaner bent in the shape of an arc) and told to construct one or two other object states that “go best with” the experimenter's state(s). These instructions allowed children to choose the basis upon which to relate their states to the experimenters'. Fourth-graders predominantly constructed states that were components of continuous movements or transformations, whereas first-graders predominantly constructed states that related to the experimenters' on the basis of figural features. In a second phase of the procedure, we re-presented the states made by children and asked them to reconstruct the associated experimenter-constructed states from memory. As predicted, memory was better for children who spontaneously integrated states in transformations or movements than for children who related states on the basis of perceptual features. The results were discussed in relation to similar findings in other cognitive domains.