When visual and verbal memories compete: Evidence of cross-domain limits in working memory
When visual and verbal memories compete: Evidence of cross-domain limits in working memory
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DOI：
10.3758/bf03196573
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发表时间：
2004-04-01
影响因子：
3.5
通讯作者：
Cowan, N
中科院分区：
文献类型：
--
作者：
Morey, CC;Cowan, N
最近，研究人员提出，视觉工作记忆的运作方式不受口头材料保留的影响。我们在一个简单的双任务实验的基础上质疑这一结论，该实验旨在排除语音记忆，并确定一个更核心的能力作为共同限制的来源。与视觉工作记忆任务，其中两个阵列的颜色广场进行比较，性能是不受同时背诵的两位数的列表或已知的七位数序列。然而，当与七个随机数字配对时，视觉工作记忆的表现显着下降。这不是一个简单的权衡，因为视觉数组和高数字负荷任务的错误往往会同时发生。因此，数字和视觉信息的工作记忆都受到至少一种类型的共同限制，而不仅仅是特定领域的限制。讨论了共享极限的性质。
Recently, investigators have suggested that visual working memory operates in a manner unaffected by the retention of verbal material. We question that conclusion on the basis of a simple dual-task experiment designed to rule out phonological memory and to identify a more central faculty as the source of a shared limitation. With a visual working memory task in which two arrays of color squares were to be compared, performance was unaffected by concurrent recitation of a two-digit list or a known seven-digit sequence. However, visual working memory performance decreased markedly when paired with a load of seven random digits. This was not a simple tradeoff, inasmuch as errors on the visual array and high digit load tasks tended to co-occur. Working memory for digits and visual information thus are both subject to at least one type of shared limit, not just domain-specific limitations. The nature of the shared limit is discussed.