The number and quality of representations in working memory.
The number and quality of representations in working memory.
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DOI：
10.1177/0956797611417006
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发表时间：
2011-11
影响因子：
8.2
通讯作者：
Luck SJ
中科院分区：
文献类型：
--
作者：
Zhang W;Luck SJ
一些理论将工作记忆描述为一种灵活的资源，可以存储大量低质量的表征或少量高质量的表征。其他理论认为，工作记忆中可以储存的项目数量是严格限制的，不能通过降低表征的质量来增加。我们通过询问观察者是否可以在给予激励的情况下以质量换取数量来测试这些根本不同的工作记忆容量概念。我们没有发现任何证据表明观察者可以通过降低工作记忆中表征的质量来增加表征的数量，但他们可以在更早的加工阶段这样做。因此，工作记忆的容量限制最好被描述为可以存储的项目数量的限制，而不是同时决定表征数量和质量的可细分资源的限制。
Some theories characterize working memory as a flexible resource that can store a large number of low-quality representations or a small number of high-quality representations. Other theories propose that the number of items that can be stored in working memory is strictly limited and cannot be increased by decreasing the quality of the representations. We tested these fundamentally different conceptualizations of working memory capacity by asking whether observers could trade quality for quantity when given incentives to do so. We found no evidence that observers could increase the number of representations by decreasing the quality of the representations in working memory, but they could do so at earlier processing stages. Thus, the capacity limit in working memory is best characterized as a limit on the number of items that can be stored, not as a limit in a finely divisible resource that simultaneously determines the number and quality of the representations.
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影响因子：
--
作者：
Gold, James M.;Hahn, Britta;Zhang, Wei Wei;Robinson, Benjamin M.;Kappenman, Emily S.;Beck, Valerie M.;Luck, Steven J.
通讯作者：
Luck, Steven J.
影响因子：
5.4
作者：
MANDLER, G
通讯作者：
MANDLER, G
影响因子：
1.8
作者：
Alvarez, George A.;Franconeri, Steven L.
通讯作者：
Franconeri, Steven L.
影响因子：
3.5
作者：
Scolari, Miranda;Vogel, Edward K.;Awh, Edward
通讯作者：
Awh, Edward
影响因子：
3.5
作者：
Rouder, Jeffrey N.;Speckman, Paul L.;Iverson, Geoffrey
通讯作者：
Iverson, Geoffrey