Abstract
Information processing capabilities of normal and retarded individuals were studied within the context of a modified Sternberg recognition memory task. Presentation of items in the memory set was self-paced, and stimulus exposure times and response latencies were recorded. It was found that normal and retarded individuals spent the same amount of time processing subspan lists during input to the memory system; however, the normal subjects spent less time retrieving information from that system than did the retarded subjects. Part of the superiority of normal subjects was attributable to their higher scanning speeds during the stimulus comparison stage of memory retrieval. The scanning strategy of normal and retarded subjects, on the other hand, was found to be the same: serial and exhaustive. It was further demonstrated that the binary decision stage of retrieval was not related to differences in intelligence.
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