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  • Title: Reliability and validity of nasality ratings between a monolingual and bilingual listener for speech samples from English-Spanish-Speaking children.
    Author: Watterson T, Lewis KE, Murdock T, Cordero KN.
    Journal: Folia Phoniatr Logop; 2013; 65(2):91-7. PubMed ID: 24157638.
    Abstract:
    OBJECTIVE: This study sought to determine if a monolingual English listener could rate nasality in English and in Spanish with the same proficiency as a bilingual English-Spanish listener, and to compare nasalance scores with nasality ratings. PATIENTS AND METHODS: Speakers for this study were 26 bilingual English-Spanish-speaking children. Speech samples and nasalance scores were obtained simultaneously as each speaker recited one English sentence and one Spanish sentence. A monolingual listener and a bilingual listener rated nasality. RESULTS: For the English sentences, the intrajudge correlation coefficient was r = 0.89 for the monolingual listener and r = 0.89 for the bilingual listener. For the Spanish sentences, the intrajudge correlation coefficient was r = 0.91 for the monolingual listener and r = 0.92 for the bilingual listener. Interjudge agreement was r = 0.86 for rating English sentences and r = 0.78 for rating Spanish sentences. All correlation coefficients were significant (p < 0.001). The correlation coefficients between nasality ratings and nasalance scores were essentially the same for both listeners and both languages. CONCLUSION: A monolingual and a bilingual judge had high agreement on ratings of nasality for English and Spanish speech. The relationship between nasalance and nasality was not different across languages.
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