Abstract
On each of a series of Brown-Peterson short-term memory (STM) tests, the presentation of a verbal to-be-remembered (TBR) item (a five-letter quintogram in Experiment 1 and an eight-letter octogram in Experiment 2) was followed immediately by a 10-sec retention interval. During the retention interval, subjects recalled and reproduced previously learned paired associate response triads that consisted of three concrete pictures, concrete words, abstract pictures, or abstract words. Following selective retrieval of one of the four types of response triads from long-term memory (LTM), subjects attempted to recall the TBR items from STM. In both experiments, the intervening retrieval of abstract words resulted in significantly poorer retention of the TBR items than did the intervening retrieval of concrete words; the retrieval of concrete words resulted, in turn, in significantly poorer retention of the TBR items than did the retrieval of concrete or abstract pictures. Retrieval of the latter two types of materials appeared not to interfere with the short-term retention of the TBR verbal material (i.e., the quintograms and octograms). The results reflect the occurrence of selective interference effects, and, except for one discrepant finding, appear to be consistent with Paivio’s 11971) dual-coding hypothesis and Shiffrin and Schneider’s (1977) general theory of memory.
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