Wolfe Virginia, Martin David, Borton Thomas, Youngblood Heather Conner
Auburn University Montgomery, Montgomery, AL 36117, USA.
Am J Speech Lang Pathol. 2003 May;12(2):221-8. doi: 10.1044/1058-0360(2003/068).
Although the ability of clinicians to perceptually process speech sound productions is a key ingredient in the evaluation and remediation of articulatory disorders, very little attention has been given to this important skill. This study explored the potential of a perceptual task, known as cue trading, to assess perceptual skill among students with varying clinical experience. A cue-trading paradigm for the /r-w/ contrast was used in which a temporal-spectral cue on F2 was balanced against a spectral cue on F3. Results indicated a trading relationship for all students. However, students without clinical experience demonstrated reduced sensitivity to the acoustic cues for /w/ and identification functions that were less clearly separated compared to students with clinical experience. Furthermore, the magnitude of the difference between functions (the trading relationship) was significantly smaller for students without practicum experience: They showed weaker phonetic percepts for /r/ and /w/ than did the students with practicum experience. Preliminary results suggest that a task based on cue trading could be useful in assessing perceptual sensitivity to the acoustic cues representative of misarticulated /r/.
尽管临床医生对语音产生进行感知处理的能力是评估和矫治发音障碍的关键因素，但这项重要技能却很少受到关注。本研究探讨了一种名为线索交换的感知任务在评估具有不同临床经验的学生感知技能方面的潜力。使用了针对/r-w/对比的线索交换范式，其中F2上的时间频谱线索与F3上的频谱线索相互平衡。结果表明所有学生都存在交换关系。然而，与有临床经验的学生相比，没有临床经验的学生对/w/的声学线索敏感度降低，识别功能区分不那么明显。此外，没有实习经验的学生功能之间差异的幅度（交换关系）明显更小：他们对/r/和/w/的语音感知比有实习经验的学生更弱。初步结果表明，基于线索交换的任务可能有助于评估对代表/r/发音错误的声学线索的感知敏感度。
