Global/local processing and negative priming: the influence of selection difficulty and stimulus exposure (original) (raw)

2001, Psychological Research

Negative priming is a decrement in performance observed when a previously ignored stimulus is re-presented as a target. The present study examined the relation between selection diculty and negative priming in ®ve experiments that used hierarchical stimuli (large letters made up by small letters). The results show that negative priming is greater when subjects direct attention to the local level (more dicult selection) than when they direct attention to the global level (less dicult selection). However, that occurs only when exposure of prime and probe is suciently long. With shorter presentations, negative priming is still observed but is no longer modulated by selection diculty. These results suggest that both anticipatory and reactive mechanisms are responsible for the occurrence of negative priming and that instantiation of the reactive mechanism depends on the time available for prime and probe selection.

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