#3620. Academic lexical coverage in TED talks and academic lectures

October 2026publication date
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Journal’s subject area:
Linguistics and Language;
Education;
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Abstract:
The coverage of academic lexis is compared in a TED talk corpus (2,483 talks, 5,068,781 words). Academic lexis is defined by the Academic Word List, the Academic Vocabulary List, and the Academic Spoken Word List. This difference was smaller for academic tagged TED talks. An analysis of the cumulative coverage of types demonstrated a lower representation of the less frequent academic types in TED talks.
Keywords:
Academic lectures; Academic vocabulary; English for academic purposes; Lexical coverage; TED talks

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