Stimulus codability and long-term recognition memory for visual form.

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Abstract
Investigated the role of distinctive verbal labels and scaled stimulus codability on the temporal course of recognition memory for complex random shapes. Either immediately or after delays of 15 min. or 1 wk., 120 undergraduates were given a 5-stimulus, forced-choice, shape-recognition test and a free recall test for retention of associated verbal labels. High stimulus codability, longer stimulus exposure, and verbal label training all resulted in superior recognition performance. Shape recognition was generally stable over the delays employed, while label recall showed a significant retention decrement. The course of shape-recognition memory and label recall was found to be essentially independent. It is concluded that the effect of verbal labels on memory for form, even under conditions designed to maximize label use, is best attributed to processes occurring during the encoding or acquisition phase of the memory task. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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