The main purpose of this study is to investigate guessing in the Yes/No (YN) format vocabulary test. One-hundred-and-five university students took a YN test, a translation task and a multiple-choice vocabulary size test (MC VST). With matched lexical properties between the real words and the pseudowords, pseudowords could index guessing in the YN…

Given the practical significance of vocabulary testing in language teaching and the theoretical foundations of developing a vocabulary test, four well-established vocabulary tests are introduced for diagnostic purpose together with their corresponding validation studies, with a focus on the designed purpose, the selection of the items, the…