This study of 20 stuttering and 20 nonstuttering preschool children found that stuttering children scored lower on 7 out of 8 language measures, with no significant intergroup differences on articulation proficiency or fluency. There were few significant correlations between measures of stuttering rate, speaking rate, and language performance…

Examined the speech patterns of three- to eight-year-old children. Results showed that the children most often used "ah" phenomena and unfilled pauses as do adults. "Ah" phenomena showed a significant increase with age, especially between five and six among the females. (SRT)