Is comprehension necessary for error detection? A conflict-based account of monitoring in speech production

Speech errors;Speech monitoring;Domain-general mechanisms;Error detection

Nozari, Nazbanou

关键词: Speech errors;    Speech monitoring;    Domain-general mechanisms;    Error detection;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/24331/Nozari_Nazbanou.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

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 productionoutput for errors. Such a comprehension-based monitor, however, cannot explain thedouble dissociation between comprehension and error-detection ability observed in theaphasic patients. We propose a new theory of speech-error detection which is, instead, basedon the production process itself. The theory borrows from studies of forced-choiceresponsetasks the notion that error detection is accomplished by monitoring responseconflict via a frontal brain structure, such as the anterior cingulate cortex. We implement thisidea in the two-step model of word production, and test the model-derived predictions on asample of aphasic patients. Our results show a strong correlation between patients’ error detectionability and the model’s characterization of their production skills, and nosignificant correlation between error detection and comprehension measures, thussupporting a production-based monitor, generally, and the implemented conflict-basedmonitor in particular. The successful application of the conflict-based theory to error detectionin linguistic, as well as non-linguistic domains points to a domain-generalmonitoring system.