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首页> 外文期刊>Child neuropsychology: a journal on normal and abnormal development in childhood and adolescence >Poorer divided attention in children born very preterm can be explained by difficulty with each component task, not the executive requirement to dual-task
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Poorer divided attention in children born very preterm can be explained by difficulty with each component task, not the executive requirement to dual-task

机译：Poorer divided attention in children born very preterm can be explained by difficulty with each component task, not the executive requirement to dual-task

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Children born very preterm (VP, 32 weeks) exhibit poor performance on tasks of executive functioning. However, it is largely unknown whether this reflects the cumulative impact of non-executive deficits or a separable impairment in executive-level abilities. A dual-task paradigm was used in the current study to differentiate the executive processes involved in performing two simple attention tasks simultaneously. The executive-level contribution to performance was indexed by the within-subject cost incurred to single-task performance under dual-task conditions, termed dual-task cost. The participants included 77 VP children (mean age: 7.17years) and 74 peer controls (mean age: 7.16years) who completed Sky Search (selective attention), Score (sustained attention) and Sky Search DT (divided attention) from the Test of Everyday Attention for Children. The divided-attention task requires the simultaneous performance of the selective- and sustained-attention tasks. The VP group exhibited poorer performance on the selective- and divided-attention tasks, and showed a strong trend toward poorer performance on the sustained-attention task. However, there were no significant group differences in dual-task cost. These results suggest a cumulative impact of vulnerable lower-level cognitive processes on dual-tasking or divided attention in VP children, and fail to support the hypothesis that VP children show a separable impairment in executive-level abilities.

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