Discusses the theoretical basis, implementation, and pedagogical considerations of CALLE (Computer-Aided Language Learning Environment), a dialogue-based beginning Spanish language instruction system. CALLE uses Lexical Functional Grammar Theory to analyze errors in student input. Sample screen is shown. (Author/LMO)

SPANLAP (SPANish LAnguage Processing) is a computer program which attempts to engage students of Spanish in a free-form written dialog by allowing them to ask questions. The morphological and syntactic parsing process used in SPANLAP is explained. Sample dialog illustrates limitations of the current model. (Author/LMO)

Outlines the design considerations that go into making an authoring system. Uses examples from the author's system, "Private Tutor," to illustrate. Emphasis is on the concepts that define the operation of the authoring system. Also discusses design principles of "Private Tutor" in relation to the Macintosh computer. (Author/LMO)

Describes the development in progress of a syntactic parser of German called "Syncheck," which uses the programing language "Prolog." The grammar is written in a formalism called "Definate Clause Grammar." The purpose of "Syncheck" is to provide advice on grammatical correctness to intermediate and advanced…

A database used in an analysis of writing errors of Swedish university students is discussed, including the major grammatical and vocabulary errors discovered. This study is compared with others, including a study of the writing errors of students from a variety of first-language backgrounds. Applications and directions for future research are…