An experimental study investigating the interaction of linguistic complexity and performance in child language acquisition tests the hypothesis that children learning a first language acquire relatively complex sentences somewhat later than less complex sentences. In one of three tests, the subjects, 44 children aged 3.6 to 6 years, were presented…

Comparison of disfluent conversational utterances of 14 children who stutter and 14 children (mean age of both groups 52 months) who do not stutter found that for both groups, disfluency clusters were typically produced at clause onset and within the most complex linguistic contexts and that they reflect the effects of producing multiple syntactic…