A general factor involved in dual-task performance decrement

Bourke, Patrick and Duncan, John and Nimmo-Smith, Ian (1996) A general factor involved in dual-task performance decrement. Quarterly Journal of Experimental Psychology A, 49 (3). pp. 525-545. ISSN 0272-4987

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A general factor involved in dual-task performance decrement
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Full text URL: http://dx.doi.org/10.1080/027249896392487

Abstract

Beyond specific conflicts between tasks that are obviously similar (e.g. two verbal tasks) and limits specific to speeded responses, is there a general limitation on what tasks can be done simultaneously? In two experiments, we examined dual-task combinations designed to avoid known sources of specific interference. Under these circumstances, a general factor model predicts consistency in the pattern of results. Tasks should be ordered in demands on the general factor as measured by interference with concurrent tasks; this order should be the same for any concurrent task used to measure it. This prediction was confirmed in both experiments, each involving 12 dual task combinations of four tasks. In Experiment 1, the tasks were tone discrimination, random letter generation, a manual- tactile manipulation task,and recognition memory for photographs. In Experiment 2, the ® rst of these was replaced by an easier tone-monitoring task, and the last by a visual prototype learning task.

Item Type:Article
Additional Information:Beyond specific conflicts between tasks that are obviously similar (e.g. two verbal tasks) and limits specific to speeded responses, is there a general limitation on what tasks can be done simultaneously? In two experiments, we examined dual-task combinations designed to avoid known sources of specific interference. Under these circumstances, a general factor model predicts consistency in the pattern of results. Tasks should be ordered in demands on the general factor as measured by interference with concurrent tasks; this order should be the same for any concurrent task used to measure it. This prediction was confirmed in both experiments, each involving 12 dual task combinations of four tasks. In Experiment 1, the tasks were tone discrimination, random letter generation, a manual- tactile manipulation task,and recognition memory for photographs. In Experiment 2, the ® rst of these was replaced by an easier tone-monitoring task, and the last by a visual prototype learning task.
Keywords:Dual task performance
Subjects:C Biological Sciences > C800 Psychology
C Biological Sciences > C850 Cognitive Psychology
Divisions:College of Social Science > School of Psychology
ID Code:3397
Deposited By: Alison Wilson
Deposited On:29 Sep 2010 14:13
Last Modified:13 Mar 2013 08:48

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