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How to Trace the Growth in Learners’ Active Vocabulary? -- a corpus based study

How to Trace the Growth in Learners’ Active Vocabulary? -- a corpus based study. Agnieszka Leńko-Szymańska TEFL Unit University of Łódź. Dimensions of learners’ vocabulary knowledge. passive knowledge active knowledge in an elicitation task active knowledge in a free production task.

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How to Trace the Growth in Learners’ Active Vocabulary? -- a corpus based study

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  1. How to Trace the Growth in Learners’ Active Vocabulary? -- a corpus based study Agnieszka Leńko-Szymańska TEFL Unit University of Łódź

  2. Dimensions of learners’ vocabulary knowledge • passive knowledge • active knowledge in an elicitation task • active knowledge in a free production task

  3. Test measuringreceptive vocabulary size • Vocabulary Levels Test (Nation 1983, 1990) • Eurocentres Vocabulary Size Test (Meara & Jones 1990)

  4. Test measuringproductive vocabulary size • Vocabulary Levels Test (active version) (Laufer and Nation 1995)

  5. Some measures oflexical richness • Lexical Density • Lexical Originality • Lexical Variation • Lexical Sophistication • Others less frequently employed tests: semantic variation, lexical quality, T-unit length, error free T-unit length (Laufer and Nation 1995, Meunier 1998)

  6. Reasearch aims • to compare the validity of two measures of lexical richness: • lexical variation • lexical sophistication • to trace and analyse the growth of receptive and productive vocabulary in advanced learners of English at two different proficiency levels

  7. Tools • Vocabulary Levels Test (receptive version) • Wordsmith • VocabProfile

  8. Vocabulary Levels Test • original • private __________ complete • royal __________ first • slow __________ not public • sorry • total

  9. Lexical variation measure • Type/Token Ratios • Type/Token Ratio • Standardised Type/Token Ratio (300 words) • Standardised Type/Token Ratio (150 words) • Standardised Type/Token Ratio (450 words) -- YEAR IV only

  10. Lexical sophistication measure • Lexical sophistication: Lexical Frequency Profile • 1000 • 2000 • UWL (Xue & Nation 1984) • not in the lists (> 2000)

  11. Receptive vocabulary sizeYEAR I & YEAR IV • YEAR I 100 students range 5455 -- 9646 word families mean = 8236,1 SD = 936,136 • YEAR II 67 students range 7601 -- 10000 word families mean = 9218,21 SD = 665,933

  12. Comparison of receptive vocab.YEAR I & YEAR IV

  13. Comparison of receptive vocab.YEAR I & YEAR IV • mean Year I < mean Year IV • t = -7,41823 • P-value = 1,15253E-7

  14. Essay statisticsYEAR I & YEAR IV • YEAR I 100 essays range 302 -- 659 tokens mean = 486,75 SD = 64,8036 • YEAR II 67 essays range 466 -- 1030 tokens mean = 714,343 SD = 124,573

  15. Comparison of Type/Token RatiosYEAR I & YEAR IV

  16. Lexical Frequency ProfileYEAR I

  17. Lexical Frequency ProfileYEAR IV

  18. Comparison of LFP levelsYEAR I & YEAR IV

  19. Comparison of LFP levelsYEAR I & YEAR IV

  20. Comparison of Type/Token Ratios and receptive vocabulary size

  21. Comparison of LFP levels and receptive vocabulary size

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