Scheduling processes in working memory: instructions control the order of memory search and mental arithmetic

The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology
A EhrensteinR W Proctor

Abstract

Humans must often use working memory to execute processes one at a time because of its limited capacity. Two experiments tested where limits in access to working memory occur. Subjects searched a short-term memory set for one stimulus digit and performed mental arithmetic with another stimulus digit. In one experiment, they were told to carry out the mental arithmetic before the memory search and to make the arithmetic response first. In the other, they were instructed to perform the tasks in the opposite order. The overt responses were executed in the prescribed order. Moreover, the covert working memory processes were executed in the prescribed order, as revealed by a critical path network analysis of reaction times. Results are explained in terms of a double-bottleneck model in which central processes and responses are constrained to be carried out for one task at a time.

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Citations

Aug 30, 2002·Psychonomic Bulletin & Review·R Schweickert, M Giorgini
Oct 7, 2004·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Tetsuo KidaTakuroh Higashiura
Jan 3, 2001·Journal of Mathematical Psychology·R SchweickertE Dzhafarov
Sep 2, 2010·Behavior Research Methods·Evan W Patton, Wayne D Gray
Apr 13, 1999·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·C C Wrenn, R G Wiley

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