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The von Restorff Isolation Effect was studied in serial learning where the ordinal position of the isolated items was manipulated. Also, for different groups of Ss, the starting position in the serial list on Trial I was either at Item I (structural beginning) or at Item 5 (temporal beginning). Isolating the fifth item in the structural beginning treatment accelerated the learning of that item, with minimal effects when the first or last item was isolated. The data supported an hypothesis that perceptual isolation changes the order in which the isolated item is learned rather than accelerating the learning of that item as a response. Similar effects were found for the temporal beginning treatments when Item 1 or 8 was isolated. However, isolation of Item 5 retarded the learning of that item. The latter results were attributed to Ss confusion in selecting between Item 5 and 1 as the anchor point in the list. |
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