Auditory-perceptual judgment of velar stops associated to cleft palate by judges with and without experience
Julgamento perceptivo-auditivo das oclusivas velares associadas à fissura labiopalatina por juízes com e sem experiência
Viviane Cristina de Castro Marino; Tayrine Sousa Marques Borges; Mayalle Rocha Bonfim Jurado; Mariana Rodrigues Canales; Aveliny Mantovan Lima-Gregio; Jeniffer de Cássia Rillo Dutka
Abstract
Purpose: to verify: a) identify the level of agreement amount judges during auditory-perceptual ratings of velar plosive sounds before and after speech therapy, b) verify if the phonetic context of the speech samples affect judges' agreement, and c) to compare the ratings among judges with and without experience in rating CA.
Methods: speech samples of children with cleft lip and palate, 30 before and 30 after speech therapy, and 30 samples from a child without cleft lip and palate and with normal speech were rated by a group of 9 judges. Three SLPs established the gold-standard ratings used as reference for comparisons. Six other judges rated the samples for this study: three considered experienced (SLPs) and three non-experienced (students). The speech samples rated involved velar consonants /k/ and /g/ and vowels /a/, /i/ and /u/. Judges were instructed to rate presence or absence of velar consonants or presence of CA.
Results: Kappa statistics revealed moderate agreement among experienced judges and low agreement among the judges without experience for samples recorded before speech therapy. Phonetic context had an effect on the ratings before and after speech therapy. Ratings were significantly better among experienced judges before speech therapy (p-valor <0,001).
Conclusion: judges' experience and phonetic context of speech samples had an effect on ratings of CA.
Keywords
Resumo
Objetivo: verificar: a) o grau de concordância de juízes no julgamento perceptivo-auditivo da produção de oclusivas velares, antes e depois da fonoterapia; b) a possível influência da composição fonética das amostras de fala nesta concordância e c) se os julgamentos obtidos por juízes com experiência diferem daqueles obtidos por juízes sem experiência, nas condições investigadas.
Métodos: 60 amostras de fala de uma criança com fissura labiopalatina (30 previamente e 30 posteriormente a fonoterapia) e 30 amostras de fala de uma criança com fala típica (normal) foram julgadas por um grupo de 9 juízes. Três fonoaudiólogos estabeleceram os julgamentos consensuais "padrão ouro" para o estudo. Seis outros juízes julgaram as amostras: três considerados com experiência (fonoaudiólogos) e três sem experiência (alunos de graduação). As amostras de fala incluíram palavras constituídas pelas oclusivas velares /k/ e /g/ combinada com as vogais /a/, /i/ e /u/. Os juízes foram instruídos a julgar a presença, a ausência das oclusivas velares ou a presença de AC nestas amostras.
Resultados: verificou-se diferenças no grau de concordância de juízes com experiência (Kappa moderada) e sem experiência (Kappa baixo) para os julgamentos realizados na condição pré-fonoterapia. O contexto fonético das amostras de fala influenciaram os julgamentos nas condições pré e pós-fonoterapia. Houve maior percentual de acerto para os juízes experientes condição pré-fonoterapia (p-valor <0,001).
Conclusão: a experiência dos juízes e composição fonética das amostras de fala influenciam os julgamentos perceptivo-auditivos das AC.
Palavras-chave
Referências
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Submetido em:
22/01/2014
Aceito em:
25/04/2014
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