TY - JOUR
T1 - Is comprehension necessary for error detection? A conflict-based account of monitoring in speech production
AU - Nozari, Nazbanou
AU - Dell, Gary S.
AU - Schwartz, Myrna F.
N1 - Funding Information:
This research was funded by a grant from the National Institutes of Health’s National Institute for Deafness and Other Communication Disorders: DC000191. We would like to thank Michael Coles, Daniel Simons, Kathryn Bock, Susan Garnsey, Kara Federmeier, Aaron Benjamin, Robert Slevc, Robert Hartsuiker, and an anonymous reviewer for their help.
PY - 2011/8
Y1 - 2011/8
N2 - Despite the existence of speech errors, verbal communication is successful because speakers can detect (and correct) their errors. The standard theory of speech-error detection, the perceptual-loop account, posits that the comprehension system monitors production output for errors. Such a comprehension-based monitor, however, cannot explain the double dissociation between comprehension and error-detection ability observed in the aphasic patients. We propose a new theory of speech-error detection which is instead based on the production process itself. The theory borrows from studies of forced-choice-response tasks the notion that error detection is accomplished by monitoring response conflict via a frontal brain structure, such as the anterior cingulate cortex. We adapt this idea to the two-step model of word production, and test the model-derived predictions on a sample of aphasic patients. Our results show a strong correlation between patients' error-detection ability and the model's characterization of their production skills, and no significant correlation between error detection and comprehension measures, thus supporting a production-based monitor, generally, and the implemented conflict-based monitor in particular. The successful application of the conflict-based theory to error-detection in linguistic, as well as non-linguistic domains points to a domain-general monitoring system.
AB - Despite the existence of speech errors, verbal communication is successful because speakers can detect (and correct) their errors. The standard theory of speech-error detection, the perceptual-loop account, posits that the comprehension system monitors production output for errors. Such a comprehension-based monitor, however, cannot explain the double dissociation between comprehension and error-detection ability observed in the aphasic patients. We propose a new theory of speech-error detection which is instead based on the production process itself. The theory borrows from studies of forced-choice-response tasks the notion that error detection is accomplished by monitoring response conflict via a frontal brain structure, such as the anterior cingulate cortex. We adapt this idea to the two-step model of word production, and test the model-derived predictions on a sample of aphasic patients. Our results show a strong correlation between patients' error-detection ability and the model's characterization of their production skills, and no significant correlation between error detection and comprehension measures, thus supporting a production-based monitor, generally, and the implemented conflict-based monitor in particular. The successful application of the conflict-based theory to error-detection in linguistic, as well as non-linguistic domains points to a domain-general monitoring system.
KW - Aphasia
KW - Computational models
KW - Error detection
KW - Speech errors
KW - Speech monitoring
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U2 - 10.1016/j.cogpsych.2011.05.001
DO - 10.1016/j.cogpsych.2011.05.001
M3 - Article
C2 - 21652015
AN - SCOPUS:79957887724
SN - 0010-0285
VL - 63
SP - 1
EP - 33
JO - Cognitive Psychology
JF - Cognitive Psychology
IS - 1
ER -