Conversational speech of five children who stutter was recorded and then portions manipulated to modify interval duration and vowel duration. Results indicated that both interval and vowel durations moderately affected listeners' perception of stuttering. Generally, repetitions with short vowel and interval durations were judged as more…

A natural language sample of babble and words was obtained for 47 2-year-old children and compared with expressive language scores 5 months later. More than 50 percent of the variance in language outcome test scores was accounted for by rate of word use, rate of vowel babble, and behavior problems. (Author/DB)

Comparison of spontaneous language samples of 30 toddlers diagnosed with specific expressive language impairment (SLI) and language samples of typically developing toddlers found the SLI toddlers vocalized significantly less often, had proportionately smaller consonantal and vowel inventories, and used a more restricted and less mature array of…