You know the word…it’s right there…on the tip of your tongue…and…it’s gone again. Argh!
Struggling to think of a certain word is something everyone encounters. For a specific group of dementia patients, however, this is a daily battle and often involves words for common household objects previously well remembered (e.g kettle). Semantic dementia is a disease that attacks language in people in their 50s to 60s while other cognitive skills like attention and memory remain good. For people with semantic dementia, difficulties with words go beyond just thinking of a word to also recognizing the meaning of words they hear in conversation. There is no cure for this disease, however evidence is now emerging to suggest that with practice, patients can re-build certain vocabulary.
My recent study investigated the effect of a simple daily word program, set up on the home computers of four people with semantic dementia, who ranged from mild to severe. The results took us by surprise and are extremely exciting because we found that:
- All four participants showed significant improvements in their ability to recall the names of items used in their training.
- The strongest learning effects were seen in those with the most striking word problems initially.
- These improvements were quickly achieved, in only three weeks.
- The therapy involved a simple practice of repetitively presenting a flash card containing a picture of the item and the name of that item.
- Even one month after they stopped practicing participants were able to remember a significant proportion of the words tested.
This study provides another example of the potential for ongoing learning, not only in later life but also in the context of disease, such as dementia. Further still, it shows that improvements are possible even for patients with severe and advanced difficulties.