Digital tests based on speech and smell are being developed to screen for cognitive decline, researchers told the Alzheimer’s Association International Conference in Toronto. Two speech apps are already some way down the road, testing several markers including speech speed, vocabulary and rhythm in different languages to establish a baseline for testing, a session convened by the Davos Alzheimer’s Collaboration (DAC) heard. A third initiative using smell is also in the mix, primarily testing people’s ability to smell certain scents via inhalers.

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