Articulatory interference and the mown-down heterophone effect.

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Abstract
Reports 6 experiments which investigated the heterophone effect: when Ss are required to utter rapidly a sequence of words similar in spelling but not in pronunciation (e.g., mown-down or home-some), hesitations and confusions result. 8-12 undergraduates served as Ss in each experiment. The confusion effects were less apparent when the same items were interleaved so that members of the "heterophone" pairs were no longer adjacent to each other (Exp I). This effect did not depend on Ss' scanning or perceiving later words in peripheral vision (Exp II). By varying the contingencies of presentation and utterance of paired items (heterophones and neutrals), a pronunciation set could be established to cause subsequent interference (Exp III). However, overt articulation was necessary for this, not merely covert reading or memorizing, and the effect was manifested in the time taken to initiate articulation, not its duration (Exp IV-VI). Results are discussed in terms of word recognition, pronunciation sets, and grapheme-phoneme recoding. (16 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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