Research into vocabulary knowledge often differentiates between breadth (how many words a person knows) and depth (how well the words are known). Both theoretical categories are essential for understanding language learners' lexical development, but how the different aspects of vocabulary knowledge interconnect has not received the same attention…

This article examines evidence provided by quantitative and qualitative measurement of second language (L2) proficiency by elementary-level learners of French, following participation in a school foreign exchange visit. Based on a study consisting of a controlled analysis of test results from 68 pupils studying French at three secondary schools in…