RESUMO
Tongue twister error data described here were collected from 44 unimpaired speakers producing six repetitions each of 40 tongue-twisters that manipulated the position of error-prone segments within two prosodic domains: intonational phrases and utterances. Data are counts of perseveration and anticipation errors on the initial segments of phrase-initial words or phrase-final words. The location of the phrase-level prominence and other factors associated with speech errors were carefully controlled. For more details about the design, materials and methods, and for interpretation and discussion, see Beirne and Croot (2018) [1].
RESUMO
Phonological encoding of segments is thought to occur within a prosodically-defined frame, but it is not clear which of the constituent/s within the prosodic hierarchy (syllables, phonological words, intonational phrases and utterances) serve/s as the domain of phonological encoding. This experiment investigated whether segmental speech errors elicited in tongue-twisters were influenced by position within prosodic constituents above the level of the phonological word. Forty-four participants produced six repetitions each of 40 two-intonational phrase tongue-twisters with error-prone word-initial "target" segments in phrase-initial and phrase-final words. If the domain of phonological encoding is the intonational phrase, we hypothesised that segments within a current intonational phrase would interact in more errors than would segments across intonational phrase boundaries. Participants made more anticipatory than perseveratory errors on target segments in phrase-initial words as predicted. They also made more perseveratory than anticipatory errors on targets in phrase-final words, but only in utterance-final phrases. These results suggest that the intonational phrase is one domain of phonological encoding, and that segments for upcoming phrases are activated while current phrases are being articulated.
