| Abstract: | Examined whether the effect of articulatory suppression is due to the activation of an irrelevant phonology or to intermittent articulatory movements. In Exp 1, 24 undergraduates were tested for serial recall of visually presented letter sequences that were either phonologically similar or dissimilar, and had to remember each of the letter sequences under a no-suppression control or a suppression condition. In the suppression condition, half of the Ss were engaged in an intermittent speech suppression and the other half were in an intermittent whistle suppression task. The phonological similarity effects appeared in the control condition, but not in the suppression condition, irrespective of the type of suppression. In Exp 2, the phonological similarity effect again disappeared in the intermittent whistling condition, but not in the condition in which the 15 undergraduates required to engage a continuous whistling task. The results suggest that the effect of articulatory suppression was due to intermittent articulatory activity rather than the activation of an irrelevant phonology. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
