Development of perceptual sensitivity to extrinsic vowel duration in infants learning American English

• DOI: 10.1121/1.3239465
• Publication Date: 2009-12-03T14:11:54Z
• Authors: Eon-Suk Ko; Melanie Soderstrom; James Morgan
• Keywords: Stop consonant

8- and 14-month-old infants’ perceptual sensitivity to vowel duration conditioned by post-vocalic consonantal voicing was examined. Half the infants heard CVC stimuli with short vowels, half long vowels. In both groups, voiced voiceless final consonants were compared. Older showed significant mismatching consonant in condition but not condition; younger sensitive such either condition. The results suggest that extrinsic begins develop between 8 14 months.