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October 2021

Divided attention impairments after traumatic brain injury

Author(s): Moscovitch, M., Robertson, I. H.

Journal/Book: Neuropsychologia. 1999; 37: the Boulevard Langford Lane, Kidlington, Oxford Ox5 1GB, England. Pergamon-Elsevier Science Ltd. 1119-1133.

Abstract: This research investigated whether people with severe traumatic brain injury (TBI) are impaired on divided attention tasks requiring working memory. In experiment 1, a severe TBI and control group performed two tasks requiring working memory separately and concurrently. Results showed that the TBI group had impaired divided attention when performing the two tasks concurrently, although the two groups did not differ in performance when these tasks were performed separately. Experiment 2 showed that performance on the paced auditory serial addition task improved with increases in the intertrial interval for both TBI and control groups. A meta-analysis showed that TBIs are impaired on divided attention when the tasks require controlled processing, but not when the tasks can be carried out relatively automatically.

Note: Article Park NW, Baycrest Ctr Geriatr Care, Dept Psychol, 3560 Bathurst St, Suite 4W-02, Toronto, ON M6A 2E1, CANADA

Keyword(s): working memory; controlled processes; central executive; traumatic brain injury; component process model; meta-analysis; CLOSED-HEAD-INJURY; ADULT AGE-DIFFERENCES; WORKING-MEMORY; VERBAL FLUENCY; REACTION-TIME; FRONTAL-LOBE; PERFORMANCE; RECOVERY; DEFICITS; DYSFUNCTION


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