The effect of prior word and/or color activation on subsequent color naming was examined in a discrete-trials Stroop task. Both word and color primes increased color-word interference, and the magnitude of the priming effect increased as the number of priming dimensions increased. The maximal interference usually produced by incongruent Stroop stimuli was reduced when such stimuli were preceded by primes which activated both word and color dimensions. The results were discussed in terms of models which attribute color-word interference to the relative speed of word reading and color naming.
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