Can one measure of cogniton work well across Europe?

What is it about?

Dementia is a major health concern worldwide, yet it is hard to compare older people's memory and thinking from one country to another because different studies often use different tests. To help solve this, researchers developed a new set of memory and thinking tasks for use across Europe. In this study, we checked how well these tasks work. We looked at results from 2,685 people aged 65 and over in the Czech Republic, Denmark, France, Germany, and Italy. The tasks cover five areas of thinking: memory, planning and problem-solving, spatial skills, language, and awareness of time and place. We found that the tasks measure these five areas consistently, and that they also capture a person's overall thinking ability. Scores behaved as expected, with lower scores at older ages and higher scores among people with more education. Importantly, the tests worked in a similar way across all five countries, which means results can be fairly compared between them. This matters because reliable, comparable measures are essential for understanding how brain health differs across populations and for spotting risks for dementia earlier.

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Photo by engin akyurt on Unsplash

Photo by engin akyurt on Unsplash

Why is it important?

Europe's population is ageing, and dementia is becoming a growing concern for families, health services, and governments. To plan well, policymakers need to know how many older people are living with memory and thinking difficulties, and how this differs from country to country. Until now, that has been hard to do, because studies have used different tests that can't be fairly compared. This study shows that a single, standardised set of tasks can measure thinking skills in a consistent way across several European countries. With comparable results, researchers can estimate how common cognitive impairment is across Europe, and this information can help shape policies and services for an ageing population. The next step is to use this tool to explore how differences in societies, such as education systems, income, and living conditions, might affect how people's thinking abilities change as they age. This could point to ways of supporting healthier brain ageing globally.