易爱文，常燕群，陈卓铭，李贤英，黄双苗，徐宁.发育性语音障碍儿童汉语普通话声调范畴性知觉研究[J].中华物理医学与康复杂志,2017,39(1):52-55
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| 发育性语音障碍儿童汉语普通话声调范畴性知觉研究 |
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| DOI： |
| 中文关键词: 声调 发育性语音障碍 范畴性知觉 普通话 |
| 英文关键词: Tones Speech development Categorical perception Mandarin |
| 基金项目:国家自然科学基金面上项目（81372113）；广东省公益研究与能力建设专项（2014A020215019） |
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| 中文摘要: |
| 目的探讨发育性语音障碍儿童声调感知范畴化的特点及具体表现形式，为临床康复治疗提供理论依据。 方法选取4～6岁发育性语音障碍儿童30例设为患儿组，另选取年龄相仿的正常儿童30例设为正常组。要求2组受试者对通过语音分析软件Praat制作的从/bá/到/bà/的11个声调连续体语音材料进行声调辨认和区分实验。实验分别通过E-prime1.1版程序编程在电脑上呈现，根据2组受试者做出的行为来判断并比较2组在辨认率和区分率上的参数差异。 结果2组受试者在辨认曲线形态上均呈典型“S”型，即2组受试者在感知/bá/与/bà/时，均呈现出范畴化模式，正常组的范畴边界在刺激台阶6~7，而患者组范畴边界靠前，在刺激台阶5~6，其差异有统计学意义（P<0.05）；在区分曲线上，2组受试者均呈现出明显的峰值，且各峰值所对应的刺激台阶与辨认曲线的交叉中点位置基本相当。另外，患者组在辨认曲线绝对值（b1）和区分曲线峰陡峭度（DP）上均低于正常组，其差异有统计学意义（P<0.05），而患者组的边界宽度（Wcb）明显高于正常组，差异有统计学意义（P<0.05）。 结论发育性语音障碍儿童声调感知范畴化程度与正常同龄儿童存在不对称，他们在声调感知上可能存在障碍，这有可能是导致发育性语音障碍儿童在发音时发生语音偏误的一个重要因素。 |
| 英文摘要: |
| Objective To investigate the perception of Mandarin′s tones by children with speech development disorders so as to provide a theoretical basis for clinical rehabilitation. MethodsThirty children with speech development disorders (DPDs) aged 4 to 6 were matched with 30 healthy counterparts as a control group. Both groups underwent the tone perception experiment, which included tone identification and discrimination tasks. The speech stimuli were 11 computer-simulated voices expressing a continuum of sounds from Mandarin speech ranging from /bá/ to /bà/. The two groups were compared in their ability to identify and differentiate the tones. ResultsBoth groups showed typical “S-shaped” identification curves in a category pattern. The category boundaries of the control group were between stimulus steps 6 and 7, significantly different from those of the experimental group where the boundary fell between stimulus steps 5 and 6. On the distinguishing curve, both groups presented obvious peak values. The stimulus steps of the peaks and the crossing points of the identification curves were consistent. In addition, the average absolute value (b1) of the identification curve and the peaks′ degree of steepness (DP) of the DPD group′s distinguishing curve were significantly lower than those of the control group. At the same time, the average boundary width (Wcb) was significantly higher than that of the control group. ConclusionChildren with speech development disorders perceive Mandarin tones with categories different from those of normal children. They may have difficulty in perceiving tones, which might be an important factor leading to pronunciation errors. |
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