Department of Speech and Hearing Sciences, University College Cork, Cork, Ireland.
Department of Speech-Language Pathology, University of Toronto, Toronto, Canada.
Clin Linguist Phon. 2020 May 3;34(5):479-492. doi: 10.1080/02699206.2019.1655666. Epub 2019 Aug 20.
Auditory-perceptual judgements are regarded as the standard method for assessing speech disorders. However, the results of auditory-perceptual evaluations and rater reliability can be affected by various factors, such as concurrent problems in multiple speech subsystems. This study investigated the effect of a co-occurring articulation disorder on auditory-perceptual judgements of hypernasality and the effect of co-occurring hypernasality on judgements of an articulation disorder. The speech stimuli were sentences produced by a male speaker who simulated four levels of hypernasality (typical nasality, and mild, moderate, and severe hypernasality) at four levels of disordered articulation (typical articulation, and mild, moderate, and severe articulation disorder). Thirty speech and language therapy students used visual analogue scales to rate the severity of hypernasality and articulation disorder for each speech sample. Results showed that the hypernasality ratings were significantly higher when articulation disorder co-occurred compared to those without. However, there was no significant difference between mild, moderate and severe concurrent articulation disorder on hypernasality ratings. The speech samples with typical articulation and those with severe articulation disorder were rated as more severe in terms of articulation problem when combined with severe hypernasality. However, there was no significant hypernasality effect on articulation ratings for speech with mild or moderate articulation disorder. The present results generally agreed with previous findings regarding the effect of co-occurring speech problems on auditory-perceptual judgements. Clinicians are advised to be cautious of the potential impact. If possible, speech evaluation using instrumental techniques should be used to supplement auditory-perceptual judgements.
听觉感知判断被认为是评估语音障碍的标准方法。然而，听觉感知评估的结果和评分者的可靠性可能会受到多种因素的影响，例如多个语音子系统同时存在的问题。本研究调查了共现构音障碍对超鼻音听觉感知判断的影响，以及共现超鼻音对构音障碍判断的影响。语音刺激是由一名男性说话者模仿四种不同程度的超鼻音（正常鼻音和轻度、中度、重度超鼻音）在四种不同程度的构音障碍（正常构音和轻度、中度、重度构音障碍）下产生的句子。30 名言语语言治疗学生使用视觉模拟量表对每个语音样本的超鼻音和构音障碍严重程度进行评分。结果表明，当共现构音障碍时，超鼻音评分明显高于无共现构音障碍时。然而，在轻度、中度和重度共现构音障碍之间，超鼻音评分没有显著差异。在与重度超鼻音结合时，具有典型构音和重度构音障碍的语音样本在构音问题方面被评为更严重。然而，在轻度或中度构音障碍的语音中，超鼻音对构音评分没有显著影响。本研究结果与先前关于共现语音问题对听觉感知判断影响的研究结果基本一致。临床医生应谨慎对待潜在的影响。如果可能，应使用仪器技术进行语音评估，以补充听觉感知判断。
