Sound-level errors collected by ear from continuous communicative speech have been interpreted as mis-selections of planning elements, which are then produced fluently without residue of the original target (Lashley 1957, Fromkin 1972, Garrett 1975, Shattuck-Hufnagel 1982). In contrast, articulatory measures of tongue twister errors reveal gestural intrusions: target and intrusion elements are co-produced, sometimes resulting in a gestural error which is imperceptible to listeners (Pouplier 2003, Goldstein et al. 2007; see also Mowrey and MacKay 1970). Is this apparent difference due to structure and processing differences between the two utterance types, i.e., sentences (e.g., The top cop saw a cop top) vs alternating repetitive word lists (e.g., top cop top cop top cop) generally produced with quasi-periodic timing? Or, do articulatory measures simply capture the nature of sound-level errors more accurately? We elicited errors using both types of stimuli in the same experimental session; perceptual and acoustic analyses show that sentences provoke more apparent whole-segment substitutions (e.g., /tap/ for /kap/), while alternating repetitive lists provoke more errors with two onset bursts (e.g., /tkap/), resembling gestural intrusions. This suggests that there may be more than one mechanism underlying spoken errors, and that different materials may engage these mechanisms to different degrees.
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November 01 2013
A comparison of speech errors elicited by sentences and alternating repetitive tongue twisters
Stefanie Shattuck-Hufnagel;
Stefanie Shattuck-Hufnagel
Speech Commun., MIT, 36-511 MIT, 77 Mass Ave., Cambridge, MA 02139, sshuf@mit.edu
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Argyro Katsikis;
Argyro Katsikis
Univ. of Potsdam, Potsdam, Poland
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Marianne Pouplier;
Marianne Pouplier
Univ. of Munich, Munich, Germany
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Louis Goldstein
Louis Goldstein
USC, Los Angeles, CA
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J. Acoust. Soc. Am. 134, 4166 (2013)
Citation
Stefanie Shattuck-Hufnagel, Cathy Bai, Mark Tiede, Argyro Katsikis, Marianne Pouplier, Louis Goldstein; A comparison of speech errors elicited by sentences and alternating repetitive tongue twisters. J. Acoust. Soc. Am. 1 November 2013; 134 (5_Supplement): 4166. https://doi.org/10.1121/1.4831271
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