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  • Title: Vigilance performance of mildly mentally retarded adults.
    Author: Kirby NH, Nettelbeck T, Bullock J.
    Journal: Am J Ment Defic; 1978 Jan; 82(4):394-7. PubMed ID: 623160.
    Abstract:
    Mildly mentally retarded adults were compared on both an auditory and a visual vigilance task with subjects having greater than average intelligence. Contrary to results reported by Semmel (1965) using a visual task, no difference was found in the rate of decline of performance between the two groups in either of the two tasks, although overall performance of the above-average group was superior to that of the retarded group. The results offered no support for the hypothesis that mentally retarded persons suffer from a more rapid decay in arousal under conditions of reduced sensory variation. Nor did they support a suggestion that in this particular situation retarded subjects would demonstrate more inattention than would nonretarded subjects.
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