By Nelson Butters
• Edit date: 1980 • writer: educational Press. Inc • ISBN: 0-12-148380-0 • writer: Nelson Butters/Laird S. Cermak • Preface/Forward: by way of the authors • No. Pages: 188
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Additional resources for Alcoholic Korsakoff's Syndrome. An Information-Processing Approach to Amnesia
In an attempt to determine at least one of the factors underlying alcoholic Korsakoff patients' impaired LTM performance, Cermak and Butters (1972) performed an experiment in which the patients were orally presented with a short serial list of eight words. , animals, 38 3. 3 The graph illustrates the mean percentage of correct recall of words as a function of the order of their presentation. vegetables, professions, and names). Following the reading of the list, the patients were asked immediately to freely recall as many of the words as they could.
Instead, information that, for most native-born Americans, was learned long ago is being tapped. T h e fact that nearly normal memory exists for these far distant events bodes ill for a pure, retrieval deficit theory of long-term recall. As the memory disorder becomes progressively more marked for the more recently occurring events, one would have to propose that less and less material is attaining a long-term permanent status. Whether this is due to gradual degeneration of brain function is unknown.
The amount that is retained, or saved, is expressed by the formula: Savings Score = lOOx Original trials — Relearning trials Original trials As can be seen, when no relearning trials are necessary, the savings score is 100%. When it takes as much time to relearn as it took to learn, retention is scored at 0%. Short-Term-Memory Paradigms As discussed previously, the most popular presentation technique used for studying STM (or at least for studying the rate of forgetting from STM) has been the distractor technique developed by Peterson and Peterson (1959).
Alcoholic Korsakoff's Syndrome. An Information-Processing Approach to Amnesia by Nelson Butters