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KOIZUMI Rie , MOCHIZUKI Masamichi

… on the Rasch scale of item difficulty, (b) there were few problematic items, (c) the difficulty generally increased at higher levels, (d) test-takers felt that the PC and written versions shared the construct of vocabulary knowledge/ability but differed in that the PC version measured speed of lexical retrieval, due to its imposed time limits, (e) the items had unidimensionality, high reliabilities, and measurement invariance, (f) three forms of the PC version and one form of the written version are parallel, and (g) that …

JACET JOURNAL (53), 35-55, 2011-10-27

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