Constant capacity in an immediate serial-recall task - A logical sequel to Miller (1956)
Constant capacity in an immediate serial-recall task - A logical sequel to Miller (1956)
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DOI：
10.1111/j.0956-7976.2004.00732.x
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发表时间：
2004-09-01
影响因子：
8.2
通讯作者：
Rouder, JN
中科院分区：
文献类型：
--
作者：
Cowan, N;Chen, ZJ;Rouder, JN
我们评估了一个假设，即工作记忆容量应该包括恒定数量的独立心理单元或块（cf. Miller, 1956）。由于测量块的实际困难，尽管米勒的文章受到广泛关注，但这一假设此前尚未得到验证。我们使用了一个训练程序来操纵在一个即时连续回忆任务中包含的单词对之间的关联强度。虽然联想训练的数量明显增加了两个项目块的可用性，因此在列表回忆中正确的项目数量，但回忆的总块数量（单词块加两个单词块）似乎在联想强度中保持大致不变，支持恒定容量的假设。
We assessed a hypothesis that working memory capacity should include a constant number of separate mental units, or chunks (cf. Miller, 1956). Because of the practical difficulty of measuring chunks, this hypothesis has not been tested previously, despite wide attention to Miller's article. We used a training procedure to manipulate the strength of associations between pairs of words to be included in an immediate serial-recall task. Although the amount of training on associations clearly increased the availability of two-item chunks and therefore the number of items correct in list recall, the number of total chunks recalled (singletons plus two-word chunks) appeared to remain approximately constant across association strengths, supporting a hypothesis of constant capacity.