vocd
English
Alternative forms
- VOCD, VocD, vocD
Etymology
Abbreviation of vocabulary diversity.
Noun
vocd (uncountable)
- (corpus linguistics) A measure of the lexical diversity of a given corpus, determined by comparing the sizes of steadily larger random samples from the corpus against their respective type-token ratios.
- 2008, Eliza Carlson Lee; Leslie Rescorla, “The Use of Psychological State Words By Late Talkers at Ages 3, 4 and 5 Years”, in Applied Psycholinguistics, volume 29, DOI:, page 23:
- A recently developed index of lexical diversity, vocD, uses repeated calculations of the type–token ratio (TTR) over a range of tokens to show how the TTR varies in relation to sample size. […] Owen and Leonard (2002) found that children with SLI between the ages of 3 and 7 had lower scores on vocD based on 100 utterances than age-matched, typically developing comparison children […]
- 2016, Stephen Kintz; Heather Harris Wright, “Semantic Knowledge Use in Discourse: Influence of Age”, in Discourse Processes, volume 54, DOI:, page 7:
- A paired sample t-test was conducted and results indicated no significant differences between vocd scores for younger and older participants, t(29) = 1.154, p = .253.
- 2018, Jessica L. Montag; Michael N. Jones; Linda B. Smith, “Quantity and Diversity: Simulating Early Word Learning Environments”, in Cognitive Science, volume 42, number 52, DOI:, page 380:
- To calculate a VOCD, words from a corpus are randomly sampled, in increasing sample sizes. The resultant curve relating sample size and type-token ratio is plotted, and a value is fit to a segment of that curve.
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