Memory tests and brain health

What do memory tests actually measure?

Memory is a core function of the brain. It enables us to absorb new information, retain it, and recall it later.

Memory tests are designed to measure these processes in a standardized way. They often assess:

• the ability to remember words, images, or patterns
• the ability to retrieve information after a short or long period
• the ability to recognize previously presented information

This type of task provides insight into how efficiently the memory is functioning at that moment.

Developed at the universities of Groningen and Seattle

The memory tests used within Remind are based on academic research into how memory changes over time, and not just on a single measurement moment. This technology has been developed through a long-term collaboration between researchers at the University of Groningen and research groups in Seattle (opent in een nieuw venster).

Speed of forgetting methodology

Central to this approach is the principle of speed of forgetting: not only what someone remembers at one moment is relevant, but especially how quickly information fades. Research shows that changes in this rate can be an early and sensitive indicator of cognitive change, often before clear complaints arise.

Unlike classic memory tests, which are usually a snapshot and often conducted in a clinical setting, this technology is designed for repeated use. By offering the same memory tasks at multiple times, a pattern over time emerges. This aligns with how memory changes develop in practice: gradually and subtly.

Type of memory tests that are used

In scientific research and digital applications, short, repeatable memory tasks are often used. These are designed to:

• take little time
• be repeated multiple times
• be sensitive to small changes

The memory tests used within Remind align with this type of research-based tasks.

It is important to note that these tests do not measure maximum performance but function as a measuring instrument over time.

Clinical application in research and care

Memory tests have been used for decades in research on cognitive functions and aging. In clinical settings, they support the conversation between patient and healthcare provider.

In research, memory tests are used to:

• analyze differences between groups
• make changes over time visible
• track the effects of interventions

Memory tests also play an important role in studies on brain age and digital biomarkers because they are easy to standardize and repeat.

Why repetition over time is important

A single memory test provides a snapshot. Factors such as fatigue, stress, or distraction can influence the outcome.

By regularly repeating the same test, a pattern emerges. This pattern is often more informative than a single score.

Repetition reveals:

• what remains stable
• where small changes occur
• whether trends develop over a longer period

It is precisely this longitudinal perspective that makes memory tests valuable for tracking brain health.

Interpretation at individual and population levels

On an individual level

Results are always viewed in relation to previous measurements. It’s not about right or wrong, but about change compared to yourself.

On a population level

In research, results are compared between groups. This helps in understanding general patterns in aging and cognitive change.

Within Remind, individual results are never interpreted in isolation but always in combination with other signals such as lifestyle, speech, and other cognitive measurements.

The role of memory tests within Remind

Within Remind, the memory test serves three functions:

• **Reference Point **The first test establishes a personal starting point.
• **Monitoring Over Time **Through repetition, changes become visible without drawing conclusions based on a single measurement.
• **Context for Other Signals **Memory results help to better understand and interpret other measurements.

The results are explained step by step in the app, with an emphasis on context and meaning.

Why combining is more important than a single measurement

A memory test can provide valuable insights, but within Remind it is never considered in isolation from other information. Cognitive functions influence each other and are also affected by lifestyle and daily habits. That’s why Remind uses a multi-modal approach.

Memory tests are combined with other digital measurements, such as lifestyle questionnaires and speech analysis. By examining these signals together, a richer picture of brain health emerges than would be possible with a single test. This helps to better track changes and to interpret results in a careful manner.

In conclusion

Memory tests provide an accessible and scientifically supported way to track cognitive functions. Through repetition and combination with other measurements, a richer picture of brain health over time is created.

Within Remind, the memory test is therefore used as part of a broader approach, focused on insight, context, and personal follow-up.