Research is reported in which children were tested for their comprehension of four types of sentences with relative clauses. The Parallel Function Hypothesis is proposed, and implications for adult grammar are discussed. (Author/RM)

Research done while the first author was on a Science Scholarship from the National Research Council of Canada (NRC); research also supported by an NRC grant to the second author; forms part of Shannon Moeser's doctoral thesis submitted to McGill University. (VM)

Describes an experiment where subjects were exposed to a sample of sentences from an artificial linguistic system and tested on their knowledge of the linear and hierarchical structures of the language. Suggests that learners succeed in inducing coherent grammatical systems only when input provides enough correlated cues to constituent…

Preliminary version of this article presented at the meetings of the Society for Research in Child Development, Minneapolis, Minnesota, April 1971. Research and preparation of the paper supported in part by an Intramural Grant from the Regents of the University of California to T. Kenney. (VM)