Evidence for featural units in the acquisition of speech production skills: Linguistic structure in foreign accent

This study examines correlations in accuracy of the production of one set of segments with accuracy in segments that share a featural contrast in Korean EFL (English as a Foreign Language) learners. Results indicate that accuracy rates for segment sets that share gestures in production tend to correlate, while segments that contrast in the same feature, but require the acquisition of different gestures do not correlate. Data here are from two tasks, a reading task and a mimicry task. Correlation results are similar across the two tasks, though a larger range of inter-subject differences in overall accuracy is evident in the mimicry task. Comparison of correlation patterns with previously published correlation patterns in perceptual identification indicates that patterns differ for perception and production, indicating that the structure of the skill sets, and hence, the acquisitional units for production and perception are different.