Discriminative skill and discriminative matching in perceptual recognition.

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Abstract
Lists of 8, 16, 32, or 64 monosyllabic words were learned by a free recall method. Before, during, and after this learning period, tests were made of S''s ability to recognize these words spoken in the presence of a severe masking noise. Both recall and recognition scores increased with practice. The increases were largest and most rapid for the short lists. The improvement in accuracy of recognition is attributed to two different learning processes: (a) the acquisition of discriminative skill, which seems to involve an adjustment by S to relevant aspects of the recognition task, and (b) the improvement in discriminative matching, which results from knowledge of the set of alternative possibilities to which the individual stimulus events must be matched.

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