%0 Journal Article %A Nation, Paul %A Laufer, B %D 2020 %T A Vocabulary Size Test of Controlled Productive Ability %U https://openaccess.wgtn.ac.nz/articles/journal_contribution/A_Vocabulary_Size_Test_of_Controlled_Productive_Ability/12560369 %R 10.26686/wgtn.12560369.v1 %2 https://openaccess.wgtn.ac.nz/ndownloader/files/23412056 %K Languages & Linguistics %K Language, Communication and Culture %K Education %X It is important in the design of the vocabulary component of a teaching program that teachers are able to discover the state of their learners' vocabulary knowledge. It is also important that researchers can draw on a variety of vocabulary measures to investigate the nature of vocabulary growth. This study focuses on a controlled production measure of vocabulary consisting of items from five frequency levels, and using a completion item type like the following. The garden was full of fra flowers. The controlled-production vocabulary-levels test was found to be reliable, valid (in that the levels distinguished between different proficiency groups) and practical. There was a satisfactory degree of equivalence between two equivalent forms of the test. © 1999 Arnold. %I Open Access Te Herenga Waka-Victoria University of Wellington