Abstract
Reaction times are slower when a target (T) appears at a location that has just contained a distractor (D) (ignored-repetition trial), relative to when it arises at a previously unoccupied spatial position (control trial), i.e., the spatial negative priming (NP) effect. In a typical spatial NP paradigm trials are presented in pairs, first the prime and then the probe. Validly cueing ignored-repetition trials, and/or reducing probe distractor probability, modulated the NP process under certain conditions following target-plus-distractor (prime response) but not after distractor-only (no prime response) primes. This supported the idea that the production of a prime (intervening) response meets the needs for producing NP modulation. Additionally, NP elimination, evident when the probe was randomly distractor-free, was not seen when the probe also contained a distractor event. This suggests that the removal of the NP effect is likely achieved by blocking the retrieval of prime distractor information, rather than by removing the NP cause. Seemingly, the presence of a probe distractor is able to bypass the retrieval block.
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