Using glossaries to increase the lexical coverage of television programs

This study examined the extent to which glossaries may affect the percentage of known words (coverage) in television programs. The transcripts of 51 episodes of 2 television programs (House and Grey’s Anatomy) were analyzed using Range (Heatley, Nation, & Coxhead, 2002) to create glossaries consisting of the low-frequency (less frequent than the 3,000 word level) word families that were encountered 10 or more times in each program. The results showed that coverage of the glossaries was 1.31% for Grey’s Anatomy and 2.26% for House. This was greater than coverage of the 3,001–4,000 most frequent word families in both programs. The cumulative coverage including the glossaries at the 3,000 word level increased to 96.00% for House and 97.20% for Grey’s Anatomy. The findings indicate that glossaries have the potential to improve comprehension of television programs.