![]() ![]() If, for example, a subject reads a sufficiently long list of words, he or she is more likely to remember words read toward the beginning than words read in the middle. The primacy effect, in psychology and sociology, is a cognitive bias that results from disproportionate salience of initial stimuli or observations. Primacy effect Main article: Primacy effect Amnesiacs with poor ability to form permanent long-term memories do not show a primacy effect, but do show a recency effect.The recency effect (but not the primacy effect) is reduced when an interfering task is given for example, subjects may be asked to compute a math problem in their heads prior to recalling list items this task requires working memory and interferes with any list items being attended to. ![]() The primacy effect (but not the recency effect) is reduced when items are presented quickly and is enhanced when presented slowly (factors that reduce and enhance processing of each item and thus permanent storage).There is experimental support for these explanations. Items that benefit from neither (the middle items) are recalled most poorly. (The first list item can be rehearsed by itself the second must be rehearsed along with the first, the third along with both the first and second, and so on.) One suggested reason for the recency effect is that these items are still present in working memory when recall is solicited. One suggested reason for the primacy effect is that the initial items presented are most effectively stored in long-term memory because of the greater amount of processing devoted to them. Among earlier list items, the first few items are recalled more frequently than the middle items (the primacy effect). ![]() When asked to recall a list of items in any order (free recall), people tend to begin recall with the end of the list, recalling those items best (the recency effect). The serial position effect refers to the finding that recall accuracy varies as a function of an item's position within a study list.
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