Journal
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-GENERAL
Volume 133, Issue 2, Pages 218-236Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0096-3445.133.2.218
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Four experiments explored the task span procedure: Subjects received lists of 1-10 task names to remember and then lists of 1-10 stimuli on which to perform the tasks. Task span is the number of tasks performed in order perfectly. Experiment I compared the task span with the traditional memory span in 6 practiced subjects and found little difference. Experiment 2 compared the task span and the memory span in 64 unpracticed subjects and also found little difference. Experiment 3 compared practice with consistent and varied lists to address retrieval from long-term memory. Experiment 4 manipulated the number of task switches and found that it had little effect on task spans. The results suggest there is no trade-off between storage and task switching, which supports some theories of executive control and challenges others.
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