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Working Memory’S Workload Capacity, Andrew Heathcote, James R. Coleman, Ami Eidels, James M. Watson, Joseph W. Houpt, David L. Strayer
Working Memory’S Workload Capacity, Andrew Heathcote, James R. Coleman, Ami Eidels, James M. Watson, Joseph W. Houpt, David L. Strayer
Psychology Faculty Publications
We examined the role of dual-task interference in working memory using a novel dual two-back task that requires a redundant-target response (i.e., a response that neither the auditory nor the visual stimulus occurred two back versus a response that one or both occurred two back) on every trial. Comparisons with performance on single two-back trials (i.e., with only auditory or only visual stimuli) showed that dual-task demands reduced both speed and accuracy. Our task design enabled a novel application of Townsend and Nozawa’s (Journal of Mathematical Psychology 39: 321–359, 1995) workload capacity measure, which revealed that the decrement in dual …