We constructed a new multiple-choice measure of Danish vocabulary, with an initial item pool of 101 items based on a 2-out-of-5 choice design. We gathered data from 622 subjects from an internet survey provider to ascertain the test properties and construct norms. The resulting complete test had excellent overall reliability, 𝑟𝑥𝑥=.95, rxx=.95, and maintained high reliability (> .90) for test scores within a z-score range of approximately -3.2 to +1.2. Predictive validity was examined using questions about education, income, and the number of books read in the previous year. Abbreviated scales were created with 5 to 50 items. Finally, norms were calculated for all scale variants.
Kirkegaard et al. (Wed,) studied this question.
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