Welcome to CATSS

Let's test your vocabulary size and strength

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About the Test

CATSS is a test of vocabulary size, the number of words the learner knows, and strength, which is the combination of four aspects of knowledge of word meaning (productive recall, receptive recall, productive recognition, receptive recognition). Vocabulary size is tested via samples of words from different word frequency levels. The vocabulary strength element is reflected in four test stages, each test stage testing one modality for each word, starting with the most difficult one (productive recall) and ending with the easiest one (receptive recognition).
Read more about CATSS
Department of English Language and Literature | Faculty of Humanities | University of Haifa

  • © Batia Laufer, Tami Levitzky-Aviad
  • Research group: Tami Levitzky-Aviad, Batia Laufer, Elena Mizrahi, Zahava Goldstein, Roni Shehtman
  • Web Programmer: Shmuel Reznik
  • Cats illustrator: Shani Tzabari (

  • This project was funded by the British Council and carried out under the ARAGs 2012-2013 programme

  • For more information, please contact – Batia Laufer ( or Tami Levitzky-Aviad (

  • This page was visited 3602 times from different computers across the world since August 2015.
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