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IS COMPREHENSION NECESSARY FOR ERROR DETECTION? A CONFLICT-BASED ACCOUNT OF MONITORING IN SPEECH PRODUCTION (2011)
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BibTeX
@MISC{Nozari11iscomprehension,
author = {Nazbanou Nozari},
title = { IS COMPREHENSION NECESSARY FOR ERROR DETECTION? A CONFLICT-BASED ACCOUNT OF MONITORING IN SPEECH PRODUCTION },
year = {2011}
}
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Abstract
Although speech is error-prone, 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-choiceresponse tasks the notion that error detection is accomplished by monitoring response conflict via a frontal brain structure, such as the anterior cingulate cortex. We implement this idea in 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
Keyphrases
comprehension necessary error detection conflict-based account monitoring speech production error detection speech-error detection aphasic patient new theory frontal brain structure patient error-detection ability conflict-based theory production-based monitor forced-choiceresponse task double dissociation model characterization production process error-detection ability verbal communication word production implemented conflict-based monitor production skill comprehension system monitor production output significant correlation strong correlation two-step model successful application response conflict model-derived prediction comprehension measure standard theory comprehension-based monitor anterior cingulate cortex perceptual-loop account
