Vocabulary Diversity

Modified on Fri, 30 Sep 2022 at 10:16 AM

DimensionModelConstructImpact on OverallDefinition
Vocabulary DiversityLanguage UseVocabularyMediumHow varied your vocabulary is (adverbs, adjectives, etc).


Responses with a higher Vocabulary Diversity score (i.e. more parts of speech or word types) correlate mildly with high TOEFL Speaking scores.




For the Vocabulary Diversity dimension, there is a mild relationship between the types of words (e.g. adjectives and adverbs) in your response and your overall TOEFL Speaking score. To earn a high overall TOEFL Speaking score, you probably need to produce more diverse vocabulary than most other test takers.

  • the Vocabulary Diversity for this response score is 76 (i.e. it is in the 76th percentile)
  • 24% of all responses scored higher; 76% of all responses scored lower
  • responses with a Vocabulary Diversity score above t73 are consistent with an overall TOEFL Speaking score in the Good range (i.e. 26-30 overall)
  • responses with a Vocabulary Diversity score between 59 and 73 scored in the Fair and the Good ranges (i.e. where the blue/green bars overlap)
  • the Impact of this dimension is 2/4, meaning there is a mild correlation between Vocabulary Diversity and your overall TOEFL Speaking score

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