Abstract

The aim of the reported experiment was to investigate the effects of inhibition of return (IOR) and level-priming on the global precedence effect (GPE). The classical hierarchical stimuli combined with IOR and the level-priming paradigm were used. The participants selectively attended to the global or local features of compound numerals. The results showed that IOR inhibited the response to the global and local features; moreover, the inhibition effect on the perception of the global features was stronger than that of the local features in the stage of inhibitory processing, resulting in the disappearance of GPE. However, level-priming promoted the response to global and local features, and the promotion effect was stronger on local features, leading to the disappearance of GPE as well. These findings suggested that hierarchical processing was affected by IOR and level-priming, which were correlated with selective attention. Thus, it indicated that global precedence could be involved in attentional mechanisms.

Highlights

  • In the recent years, several studies have reported that participants always showed shorter reaction times (RTs) to features at the global level than to features at the local level for a compound stimulus [1,2,3]

  • Participants were presented with some compound letter stimuli. ere were two conditions: the congruent condition and the incongruent condition. e results showed that RTs to identify the global letters were shorter than the RTs to identify the local letters, and interference from the global letters when participants identified the local letters was larger than in the opposite case

  • Ese two effects have been referred to as the global precedence effect (GPE) in the literature. e global RT advantage exists in the processing of early perception, and it can be mediated by early perceptual processes [5,6,7]

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Summary

Introduction

Several studies have reported that participants always showed shorter reaction times (RTs) to features at the global level (elements in the global position) than to features at the local level (elements in the local position) for a compound stimulus (a large element composed of many small elements) [1,2,3]. Is highlights flexibility in the perceptual system; when confronted with repeated-level stimuli, perceivers make use of relative information obtained previously in the early perceptual processes to guide subsequent selection in the global/local tasks [16, 18]. Investigating whether this previous information will have some influence on the GPE, which is closely related to the early perceptual process, is the second purpose of this research. If level-priming had a significant effect on the GPE, the GPE would change during the processing of the second stimulus in the repeated-level stimuli condition

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