This paper, a discussion of the use of written tests to assess second language proficiency and achievement, considers what constitutes a valid writing test task and addresses three questions: (1) To what extent is performance influenced by prior knowledge about the topic? (2) Does it make a difference how the writing task is specified on the test…

A review of the literature on a variety of issues related to testing vocabulary knowledge in a second language addresses these topics: problems in estimating vocabulary size, including the related questions of what constitutes a word, how a sample should be selected, and what are the criteria for knowing a word; sampling the basic and specialized…