DementiaBank: Theoretical Rationale, Protocol, and Illustrative Analyses.
Alyssa M Lanzi, Anna K Saylor, Davida Fromm and 3 others
PMID 36791255WHAT IT FOUND
A new standardized protocol for collecting speech samples in dementia research was piloted with 53 older adults.
In illustrative analyses, people with MCI produced shorter, less varied narratives than controls, but filler use did not differ between groups.
Key findings
01The DementiaBank protocol includes four discourse tasks (picture description, story narrative, procedural, personal) and a cognitive-linguistic battery, designed for administration in approximately 20 minutes.
02In the Delaware corpus pilot, participants with MCI produced significantly shorter Cinderella narratives with fewer total words, fewer unique words, and shorter mean utterance lengths compared to neurotypical controls.
03There was no significant difference in the percentage of verbal fillers (e.g., "uh", "um") between the MCI and neurotypical groups for either picture description or storytelling tasks.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The analyses are illustrative and based on a small pilot sample (n=53), not a large-scale validation study. The study design is cross-sectional and descriptive; it does not test the protocol's diagnostic accuracy against a gold standard. Participants were recruited primarily from a specific community registry, limiting generalizability to other populations. The paper explicitly states that these findings should be investigated more rigorously as the database grows.
Declared interests
Funding was provided by the National Institute on Aging and the National Institute on Deafness and Other Communication Disorders (NIH). The authors declare no conflicts of interest.
The easy way to misread this
Do not use the reported differences in word counts or filler use as diagnostic criteria for MCI. These were illustrative analyses from a small pilot database, not a validated clinical assessment tool.