Through analysis of chimpanzee-human discourse, study shows that four chimpanzees exposed to humanly devised symbol system use partial or complete repetition of others' symbols. They do not produce rote imitations but use repetition to fulfill variety of pragmatic functions in discourse. Theories are advanced regarding meaning of two differences…

Presents an alternative definition of negative evidence, based on the idea that the unique discourse structure created in the juxtaposition of child error and adult correct form can reveal the child in contrast or conflict between the two forms. Findings reveal that children reproduced the correct irregular model more often and persisted with…

Examines recent attempts to explain children's word use and selection through recourse to information theory. It is concluded that information theory cannot account for the complexities involved in early word selection. (AM)