Over the past decades a number of research findings have illustrated the extraordinary robustness and flexibility of human speech perception, which combines sensitivity to surprisingly detailed aspects of systematic context-governed variability in word forms with an ability to extract information about the speaker's intended words from minimal information in a sometimes highly reduced signal. Stevens ' [19] proposed model of human speech perception, based on the extraction of individual cues to

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... distinctive features, provides an account of this robust perceptual processing in adults, and is also consistent with two recent findings about speech production during development in children learning American English: the occurrence of non-adult-like cues to the voicing contrast in coda stops, and the occurrence of adult-like cues in stop-like productions of voiced dental fricatives.