Discusses research which suggests that language learning occurs by learning the regularities inherent in the semantic system and not by learning any regularities present in the syntax system. (EKN)

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…

Presents evidence from artificial language experiments in support of the "marker hypothesis," i.e., that natural languages contain elements that signal the presence of syntactic constructions and that the absence of such markers would render a language virtually unusable. (Author/AM)