e-journal
Word-frequency effects in long-term semantic priming and false memory
Several studies have used the lexical decision task (LDT) with the Deese–Roediger–
McDermott (DRM) false-memory paradigm to investigate whether long-term semantic
priming (LTSP) occurs following presentation of lists of items (e.g., bed, dream, snore)
for related non-presented lure words (e.g., sleep). However, results have been mixed,
with some studies observing priming, whilst others have not. The present study had four
goals: (i) to investigate the existence of LTSP in the LDT; (ii) to investigate effects of LTSP
on standard effects of word frequency on LDT performance; (iii) to investigate the effect,
if any, of word frequency on true and false recall; and (iv) to compare LDT performance
with performance on a subsequent free-recall task. The findings showed (i) a significant
effect of LTSP on LDT performance; (ii) no effect of LTSP on standard effects of word
frequency on LDT performance; (iii) no effect of word frequency on either true or false
free recall; and (iv) a significant relationship between LDT and free-recall performance.
Implications of these findings for understanding LTSP and false memories are discussed.
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