de Pijper, J. R. & Sanderman, A. A. (1994). On the perceptual strength of prosodic boundaries and its relation to suprasegmental cues. Journal of the Acoustic Society of America, 96 (4), 2037–2047.
This study experimentally investigated the relationship between the perceptual boundary strength and suprasegmental cues in spoken utterances. Specifically, the suprasegmental cues here referred to intonation, pause, and prefinal lengthening. Subjects were asked to listen to two versions of 20 Dutch sentences, with and without lexical information. Results showed that untrained listeners could give reliable judgments on boundary strength. Generally speaking, more phonetic cues would lead to larger perceptual boundaries. However, the relationship between them was by no means direct. That is, the depth of boundaries did not guarantee the exact number of cues involved. Perceptual results were also compared with theoretical boundary strengths predicted on the basis of syntactic information. It was shown that the two were highly correlated as well.
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