Wexler K B
J Speech Hear Res. 1982 Jun;25(2):229-34. doi: 10.1044/jshr.2502.229.
Disfluency characteristics of 36 nonstuttering boys aged 2, 4, and 6 were analyzed from tape-recorded speech samples made during free play within neutral and stress situations. Comparisons of frequency of disfluency were made among the different ages within each situation. In the neutral situation, 2-year-olds had significantly higher disfluency frequencies than either 4- or 6-year-olds for word repetitions and phrase repetitions; 2-year-olds also had a higher frequency of disrhythmic phonations than 6-year-olds but not than 4-year-olds. In the stress situation, 2-year-olds had a higher frequency of average oscillation (number of repetitions per instance of disfluency) than either 4- or 6-year-olds and a higher frequency of disrhythmic phonations than 6-year-olds. Comparisons of frequency of disfluency were also made between the neutral and stress situations. The only statistically significant differences were for word repetitions and phrase repetitions for 2-year-olds, with higher means for the neutral situation.
对36名年龄分别为2岁、4岁和6岁的非口吃男孩在中性和压力情境下自由玩耍时录制的语音样本进行了言语不流畅特征分析。在每种情境下，对不同年龄组的言语不流畅频率进行了比较。在中性情境中，2岁儿童在单词重复和短语重复方面的言语不流畅频率显著高于4岁和6岁儿童；2岁儿童的节律异常发声频率也高于6岁儿童，但不高于4岁儿童。在压力情境中，2岁儿童的平均振荡频率（每次言语不流畅的重复次数）高于4岁和6岁儿童，节律异常发声频率高于6岁儿童。还对中性和压力情境下的言语不流畅频率进行了比较。唯一具有统计学意义的差异是2岁儿童的单词重复和短语重复，中性情境下的均值更高。
