Processing interactions and lexical access during word recognition in continuous speech

Abstract The interactions, during word-recognition in continuous speech, between the bottom-up analyses of the input and different forms of internally generated top-down constraint, were investigated using a shadowing task and a mispronunciation detection task (in the detection task the subject saw a text of the original passage as he listened to it). The listener's dependence on bottom-up analyses in the shadowing task, as measured by the number of fluent restorations of mispronounced words, was found to vary as a function of the syllable position of the mispronunciation within the word and of the contextual constraints on the word as a whole. In the detection task only syllable position effects were obtained. The results, discussed in conjunction with earlier research, were found to be inconsistent with either the logogen model of word-recognition or an autonomous search model. Instead, an active direct access model is proposed, in which top-down processing constraints interact directly with bottom-up information to produce the primary lexical interpretation of the acoustic-phonetic input.

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