Despite the substantial expansion in vocabulary research since the 1980s, we still know very little about how vocabulary develops over time and what factors influence this development. This methodological overview discusses key issues and considerations in vocabulary breadth growth assessment to help advance research in this area. The report…

In an upcoming coverage-comprehension study, we plan to assess learners' meaning-recall knowledge of words as they occur in the study's reading passage. As several meaning-recall test formats exist, the purpose of this small-scale study (N = 10) was to determine which of three formats was most similar to a criterion interview regarding mean score…

The functioning of a vocabulary testing instrument rests in part on the test-taking actions made possible for examinees by item format, an aspect of test development that warrants consideration in second-language vocabulary research. For example, although iterations of the written receptive vocabulary levels test (VLT) have integrated improvements…

One of the many challenges facing Japanese university students studying English is the multi-word phrase. The English language contains a large number of such multiple-word items, which act as single words with a single meaning. This study is concerned with evaluating the efficacy of yes/no checklist tests to assess knowledge of multi-word units.…