Plasticity in memorial networks

An adaptive network model is proposed to represent the structure and processing of knowledge. Subjects formed artificial knowledge structures through controlled storage and retrieval events. The accessibility of stored information was measured as reaction time for verifying relations between memorized concepts, before and after systematic manipulation of subjects' retrieval experiences. The results indicate relationships among (a) the frequency of verifying a test relation, (b) the number of other relations involving the concepts used to evaluate the test relation, (c) the recency and frequency of verifying those other relations, and (d) reaction time to verify the test relation. Subjects' judgments of distance between pairs of memorized concepts were used to produce a theoretically reasonable spatial representation of the acquired knowledge structure.

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