HW_ASA_06_Silver - The organization of bilingual perceptual...

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The organization of bilingual perceptual consonant space: English/Spanish bilingual perception of Malayalam nasal consonants Jenna Silver, B.A. James Harnsberger, Ph.D. Department of Communication Sciences and Disorders University of Florida E-mail: [email protected] MAIN EXPERIMENT – Discrimination and Identification Methods Participants 20 English speakers Spoke no other language in the home Studied no foreign language prior to middle school 6 Malayalam speakers (Control group) Born and raised in India Spoke Malayalam in the home 20 Spanish-English Bilinguals Spoke both languages by age six Currently fluent in both languages (per self report) Stimulus Materials 2 VC:V tokens from two Malayalam speakers for six nasal consonants: [  ] Note: All dental and alveolar stimuli were consistently identified by 3 Malayalam speakers [  ] in [ ] context [ ] in [ ] context [  ] in [ ] context Procedure Categorial AX Discrimination Contrasts:  [  ], [  ], [  ], [  ], [  ] Each of 384 trials consisting of two tokens (A and X), with a 1s ISI, that were representing either the same phoneme or different phonemes All trials were physically different tokens (single talker) Subjects responded by using a mouse to click “Same” or “Different” buttons on a computer screen. Identification Each of the 32 tokens played in the AX test were presented 5 times in a random order (160 total trials) Subjects identified what nasal they heard by clicking on a corresponding nasal (presented in a key word) in their native orthography on the computer screen. Each language group had all nasal consonants from their language(s) as response choices. Figure 1. Keywords given as response choices to all three listener groups (Malayalam, Spanish-English bilinguals, English monolinguals) MAIN EXPERIMENT (continued) Table 2. Results of monolingual identification of Malayalam consonants (“Consonant”) listed by particular vowel context (“Vowel”). “Modal” refers to the modal response choice for a particular non-native consonant. Modal response percentages, as well as those for “competitors” of the modal are highlighted in blue.
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