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A new analysis of the work of Sir Terry Pratchett found his use of language was gradually deteriorating long before he was diagnosed with dementia. Writing in The Conversation, the authors of the study published in Brain Sciences point out that memory loss is but one symptom of dementia, with other cognitive issues often occurring earlier in the progression of the disease.
Language … offers a unique window into cognitive change. The words we choose, the variety of our vocabulary and the way we structure description are tightly linked to brain function. Even small shifts in language use may reflect underlying neurological change.
The study examined the "lexical diversity" of 33 books from Pratchett's Discworld series, focusing specifically on his use of adjectives. Pratchett's language in "The Lost Continent," written almost 10 years before his diagnosis with posterior cortical atrophy, a rare form of Alzheimer's, showed a significant drop in complexity. This trend continued in subsequent novels.
The authors hope that what they learned from this study will aid in the early detection of dementia symptoms. Although there is currently no cure, treatments can slow the progression of the disease, and earlier treatment tends to be more successful.
Sir Terry donated $1,000,000 to Alzheimer's research before his death, and spoke openly about his diagnosis, helping to spread awareness. I think he would be gratified to know that, even after his death, his contributions to the cause that meant so much to him continue.
Previously:
• An interview with Sir Terry Pratchett
• RIP, Terry Pratchett
• The BBC will air a docudrama on Terry Pratchett's life and his struggle with Alzheimer's