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Segmental speech errors occur earlier in utterance planning than certain phonetic processes

1985; Acoustical Society of America; Volume: 77; Issue: S1 Linguagem: Inglês

10.1121/1.2022550

1520-9024

Stefanie Shattuck‐Hufnagel,

Phonetics and Phonology Research

If single-segment speech errors occur when planning segments are represented abstractly (i.e., independent of their immediate context), and contextual adjustments are made by later processes which apply after serial ordering errors have occurred, then these contextual adjustments should reflect the influence of segments which have been introduced by error. An example of such a contextual adjustment is the duration difference in CVC syllables, where the voiced portion of the syllable is longer if the final C is voiced, and shorter if the final C is voiceless. In an error-elicitation experiment using tongue twisters, ten instances were observed where final consonants exchanged, e.g., “dig duck”→“dick dug,” “pack pig”→“pag pick” etc. When these 20 syllables were compared with correct control utterances produced by the same speakers, 19 showed durations of voicing appropriate to the segment that was introduced by error, and one was equivocal. These results are compatible with the hypothesis that segmental interaction errors occur earlier in production planning than at least some phonetic processes, and that these processes then apply to error segments and correct target segments alike. [This research is supported in part by a grant from the National Institutes of Health.]