Abstract
Semantic priming is typically eliminated when participants perform a letter search on the prime, suggesting that semantic activation is conditional upon one’s attentional goals. However, in such studies, semantic activation (or the lack thereof) is not measured during the letter search task itself but, instead, is inferred on the basis of the responses given to a later target. In the present study, direct online evidence for semantic activation was tested using words whose meaning should bias either a positive or a negative response (e.g.,present vs. absent). In Experiment 1, a semantic congruency effect was obtained, with faster responses when the word meaning matched the required response. Experiment 2 replicated the congruency effect while, simultaneously, showing the elimination of semantic priming. It is concluded that letter search does not affect the initiation of semantic activation. Possible accounts for the elimination of priming following letter search include activation-based suppression and transfer-inappropriate processing.
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Hutchison, K.A., Bosco, F.A. Congruency effects in the letter search task: Semantic activation in the absence of priming. Memory & Cognition 35, 514–525 (2007). https://doi.org/10.3758/BF03193291
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DOI: https://doi.org/10.3758/BF03193291