The task dependence of staged versus cascaded processing: an empirical and computational study of Stroop interference in speech production.
The authors investigated the on-line relationship between overt articulation and the central processes of speech production. In 2 experiments manipulating the timing of Stroop interference in color naming, the authors found that naming behavior can shift between exhibiting a staged or cascaded mode of processing, depending on task demands: An effect of Stroop interference on naming durations arose only when there was increased pressure for speeded responding. In a simple connectionist model of information processing applied to color naming, the authors accounted for the current results by manipulating a single parameter, termed "gain," modulating the rate of information accrual within the network. Results are discussed in relation to mechanisms of strategic control and the link between cognition and action.
Kello
C T
CT
Department of Psychology, Carnegie Mellon University, USA. ckello@hei.org
Plaut
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DC
MacWhinney
B
B
D000328:Adult; D000704:Analysis of Variance; D003071:Cognition; D005260:Female; D006801:Humans; D007266:Inhibition, Psychological; D008297:Male; D008960:Models, Psychological; D009483:Neuropsychological Tests; D010700:Phonetics; D011214:Practice, Psychological; D013065:Speech Intelligibility; D013068:Speech Production Measurement