Separability of prosodic phrase boundary and phonemic information

It was hypothesized that the retrieval of prosodic and phonemic information from the acoustic signal is facilitated when prosodic information is encoded by co-occurring suprasegmental cues. To test the hypothesis, two-choice speeded classification experiments were conducted, which examined processing interaction between prosodic phrase-boundary vs stop-place information in speakers of Southern British English. Results confirmed that the degree of interaction between boundary and stop-place information diminished when the pre-boundary vowel was signaled by duration and F(0), compared to when it was signaled by either duration or F(0) alone. It is argued that the relative ease of retrieval of prosodic and phonemic information arose from advantages of prosodic cue integration.