The what-where trade-off in multiple-identity tracking
The what-where trade-off in multiple-identity tracking
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DOI：
10.3758/s13414-011-0089-7
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发表时间：
2011-07-01
影响因子：
1.7
通讯作者：
Horowitz, Todd S.
中科院分区：
文献类型：
--
作者：
Cohen, Michael A.;Pinto, Yair;Horowitz, Todd S.
观察者不善于报告他们成功跟踪的对象的身份（Pylyshyn，Visual Cognition，11，801-822，2004; Scholl & Pylyshyn，Cognitive Psychology，38，259-290，1999）。因此，有人声称，跟踪对象的方式并不编码其身份（Pylyshyn，2004年）。在这里，我们提出的证据，质疑这一说法。在一系列的实验中，我们表明，试图跟踪对象的身份可以降低观察者的跟踪对象的位置的能力。这表明，分别跟踪对象的位置和身份的机制利用了共同的资源。此外，我们表明，这种共同的资源可以自愿分配之间的两种机制。这清楚地表明，位置跟踪机制和身份跟踪机制并不是完全分离的。
Observers are poor at reporting the identities of objects that they have successfully tracked (Pylyshyn, Visual Cognition, 11, 801-822, 2004; Scholl & Pylyshyn, Cognitive Psychology, 38, 259-290, 1999). Consequently, it has been claimed that objects are tracked in a manner that does not encode their identities (Pylyshyn, 2004). Here, we present evidence that disputes this claim. In a series of experiments, we show that attempting to track the identities of objects can decrease an observer's ability to track the objects' locations. This indicates that the mechanisms that track, respectively, the locations and identities of objects draw upon a common resource. Furthermore, we show that this common resource can be voluntarily distributed between the two mechanisms. This is clear evidence that the location- and identity-tracking mechanisms are not entirely dissociable.