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Volume 17 Number 2, Summer 2020, Pages 319-757   


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Examining the Validity of the LexTALE Test for Japanese College Students

    Tatsuya Nakata, Yu Tamura & Scott Aubrey


The question of how vocabulary knowledge of second language (L2) learners can be measured in a valid and reliable way has attracted attention from researchers. One widely used format for assessing vocabulary knowledge is a Yes/No test, where learners are asked to indicate whether they know each vocabulary word on the test. The purpose of this study was to examine whether the LexTALE test, a recently developed Yes/No English vocabulary test, can be an approximate measure of vocabulary knowledge and general proficiency for Japanese learners of English. In this study, 111 Japanese university students majoring in English took the LexTALE, an English to Japanese translation test, and the Vocabulary Size Test (VST). They were further asked to provide self-ratings of their English proficiency. Analysis showed that the LexTALE score correlated more strongly with the translation score and VST score than self-ratings of their proficiency. The results also showed that the LexTALE score correlated significantly with the TOEFL ITP® score, although some self-ratings resulted in a higher correlation. The findings suggest that for Japanese learners of English, LexTALE may be used as an approximate measure of English vocabulary knowledge and, to a lesser extent, general proficiency.

Keywords: LexTALE, vocabulary size test, yes/no test, lexical decision task, translation test