Non-Decision Time Effects in the Lexical Decision Task


It has been argued that performance in the lexical decision task (LDT) does not provide a direct measure of lexical access because of the effect of decision processes. We re-examine LDT data and fits of the diffusion decision model reported by Ratcliff, Gomez and McKoon (2004) and show that they assumed too little role for non-decision processes in explaining the word frequency effect. Our analysis supports an effect of frequency on decision and non-decision time.

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