We investigated how the selection of information-processing strategies is organized. We contrasted three alternative ways in which strategies may be controlled: a centralized mechanism, a hemisphere-specific mechanism or a local mechanism. We built on the previous observation that the size of the noise-compatibility effect (flanker effect) is influenced by observers' expectancies for compatible or incompatible arrays. In three experiments, we varied the probabilities of compatible or incompatible noise in different locations of the visual field. We found that observers can adapt their processing strategies, as indicated by changes in the size of the noise-compatibility effect, independently in the left and right hemifields. However, processing of midline stimuli is determined by the expectancies existing in the lateral locations. These data support the notion of a hemisphere- or location-specific selection of processing strategies and suggest that the strategy selection process is not unitary.

中文翻译：

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独立控制视野内不同位置的处理策略

我们调查了信息处理策略的选择是如何组织的。我们对比了控制策略的三种替代方式：集中机制、半球特定机制或本地机制。我们建立在先前的观察基础上，即噪声兼容性效应（侧翼效应）的大小受观察者对兼容或不兼容阵列的预期的影响。在三个实验中，我们改变了视野不同位置中兼容或不兼容噪声的概率。我们发现观察者可以独立地在左半场和右半场中调整他们的处理策略，正如噪声兼容性效应大小的变化所表明的那样。然而，中线刺激的处理是由存在于横向位置的预期决定的。