In the rating scales of major international language tests, as well as in automated evaluation systems (e.g. e-rater), a positive relationship is often claimed between lexical diversity, holistic quality of written or spoken discourses, and language proficiency of candidates. This article reports a "posteriori" validation study that analysed a…

Previous research has shown that during syntactic priming activities, L1 speakers produce more target structures when they are prompted by a lexical item that occurred in their interlocutor's previous utterance. This preliminary study investigated whether L2 speakers are similarly influenced by lexical items during syntactic priming activities.…

The study reported in this paper is an investigation of the nature of speaking proficiency in English as a second language in the context of a larger project to develop a rating scale for a new international test of English for Academic Purposes, TOEFL iBT (Brown et al. 2005). We report on a large-scale study of the relationship between detailed…

Analyzed a modern spoken corpus of English (the CANCODE corpus) and found that 2,000 word families made up less than 95% coverage. A second analysis was performed on the CANCODE and the spoken component of the British National Corpus, which found that around 5,000 individual words were required to achieve about a 96 % coverage feature. (Author/VWL)

Focuses on the measurement of lexical richness. Lexical richness is often measured either by the traditional type-token ratio or by its square root variant, the index of Guiraud. Proposes two methods that have advantages over traditional methods. Computed indices for the lexical items used in an oral text by two groups of Turkish-German…