ABSTRACT
Experimental analyses of the learning process have developed into two rather different approaches. One, carried out by biologically oriented scientists, seeks to establish the locus of plasticity, and the nature of the more or less permanent changes which allow an accumulation of experience to alter behavior. The other engages computer-oriented scientists and experimental psychologists using human subjects. It focuses on the nature of processes of retrieval: Questions are asked regarding the span which can handle a store, the types of accessing which make available that which is stored, and the structures of the accessing processes. Both of these approaches are based on a model in which the memory store associates spatio-temporally contiguous experiences and accumulates the residues of such associations which then become accessible when some similar experience addresses the storage locus.
