DIVISION OF ATTENTION - THE SINGLE-CHANNEL HYPOTHESIS REVISITED
DIVISION OF ATTENTION - THE SINGLE-CHANNEL HYPOTHESIS REVISITED
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DOI：
10.1080/14640748908402350
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发表时间：
1989-02-01
期刊：
影响因子：
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通讯作者：
LEE, RB
中科院分区：
文献类型：
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作者：
GLADSTONES, WH;REGAN, MA;LEE, RB
两个实验中，受试者分别进行了两个强制节奏的串行反应时任务，并在其最大的可持续的信息处理率。实验1考察了使用具有相同或不同输入和输出通道特征的任务对单任务和双任务绩效之间关系的影响;另外一个条件考察了使用具有较高S-R相容性的任务对这种关系的影响。实验二考察了不同信息量（S-R选择数）对单任务和双任务绩效关系的影响。在单任务和双任务条件下，受试者处理信息的能力没有发现显着差异。这一发现不受以下因素的影响：（a）任务的绝对信息水平，（B）输入和/或输出是否涉及相同或不同的模态，或（c）S-R兼容性水平。这两个实验的数据为单通道假说提供了有力的支持。
Two experiments are reported in which subjects performed two forced-paced serial reaction time tasks separately and together at their maximum sustainable rates of information processing. Experiment 1 investigated the effects on the relationship between single- and dual-task performance of using tasks with the same or different input and output modality characteristics; an additional condition tested the effects on this relationship of using tasks with higher S-R compatibility. Experiment 2 investigated the effects on the relationship between single- and dual-task performance of varying information load (number of S-R alternatives). No significant differences were found in subjects'' capacities to process information in single- and dual-task conditions. This finding was unaffected by: (a) the absolute information levels of the tasks, (b) whether inputs and/or outputs involved the same or different modalities, or (c) the level of S-R compatibility. The data from both experiments provide strong support for the single-channel hypothesis.