Gives a short grammar of the Lisp computer language. Presents an introductory English parser (Simparse) as an example of how to write a parser in Lisp. Lists references for further explanation. Intended as preparation for teachers who may use computer-assisted language instruction in the future. (LMO)

Describes the language learning program "Acquire," which is a sample of grammar induction. It is a learning algorithm based on a pattern-matching scheme, using both a positive and negative network to reduce overgeneration. Language learning programs may be useful as tutorials for learning the syntax of a foreign language. (Author/LMO)

Presents an analysis of errors in a 400-page corpus of German essays by American college students in second-year language courses showing that syntax is the most problematic area, followed by morphology. This study indicates that 80% of student errors are not of semantic origin and are potentially recognizable by a syntactic parser. (six…