Unavailability and associative loss in RI and PI: Second try.

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Abstract
Based on an earlier study, this experiment attempted to measure associative loss and availability loss as they might occur in retroactive and proactive inhibition (RI and PI). Experimental groups were tested for 1st- and 2nd-list recall by either matching- or aided-recall tests given shortly after interpolated learning or 24 hr. later. Control groups were given equivalent tests. Association was measured by correct A-B pairing in the matching test, while availability was measured by the total number of B terms given in aided recall. RI was demonstrated for both the associative and availability scores, but spontaneous recovery occurred only for association. PI was demonstrated only for the availability score at 24-hr recall. The results suggest that only unlearning produces associative loss, while recall interference produces only availability loss. The results were also related to the theory that PI is produced by a growing interaction of List 1 and List 2 over time. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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