Most brain tests score your habits. This one measures your live performance. Seven short games — about fourteen minutes — read working memory, attention, processing speed, mental flexibility, learning, endurance, and composure under pressure, then translate them into your Brain Vitality Age and a cognitive archetype.
The Brain Vitality Index is an LBL-original educational tool. Its seven tasks are adapted from well-established cognitive paradigms, but the age-reference norms and the Brain Vitality Age are provisional — set against published ranges, not yet calibrated on our own sample. It is not an IQ test, not a clinical assessment, and not a diagnosis. Read the full methodology for the task designs, scoring, and limitations.
If you are concerned about changes in your memory, attention, or thinking, talk with a qualified healthcare professional — a single online snapshot cannot rule anything in or out.
Seven short tasks, each adapted from a cognitive paradigm with a long research history. Every task teaches you first, gives you a practice round, then records your performance silently — no visible timer, no pressure to beat a clock. Your raw results are adjusted for your age, turned into seven 0–100 domain scores, and combined into a single Brain Vitality Age and a cognitive archetype that describes the shape of your profile, not just its height.
How much you can hold in mind at once. Measured with a spatial span that grows by one tile each time you are right — a direct probe of the visuo-spatial buffer at the heart of Baddeley’s model of working memory, the system that briefly holds and manipulates information during reasoning and learning.
How well you lock onto what matters and filter distraction. Measured with a flanker task in which the surrounding items try to pull you toward the wrong response; the cost of incongruent trials indexes your ability to suppress interference (Eriksen & Eriksen, 1974).
How quickly you process and respond. Measured with a symbol-to-number matching sprint. Processing speed is one of the most age-sensitive components of cognition and a strong driver of age differences on timed tasks (Salthouse, 1996) — which is why it weighs heavily in the Vitality Age.
How smoothly you switch between rules. Measured by your switch cost — the slowing that appears when the sorting rule changes under you. Switch cost is a classic index of the executive control that reconfigures the mind for a new task (Monsell, 2003).
How fast you encode and retain something new. Measured with a paired-associate task plus a delayed recall check later in the session, so the score reflects retention over time rather than a single lucky round.
Whether your performance holds or fades. Derived by the engine from how your response speed drifts from the early trials to the late ones across the whole session — a behavioural read on sustained attention and cognitive fatigue, not a separate quiz.
How well your accuracy holds when the pressure is on. Measured by contrasting your calm rounds with pressured ones — an interference contrast in the tradition of the Stroop effect (Stroop, 1935), where competing signals tax the same control resources.
An honest snapshot, not a verdict. The age-reference norms are provisional — set against published ranges, not yet calibrated on our own sample, and they sharpen as more people take the test. Treat your Brain Vitality Age as roughly a ±4-year read on how you performed in this one sitting. It is not an IQ score and not a diagnosis. The companion Brain Age Index estimates a brain age from lifestyle and health inputs; this tool measures live performance. They answer different questions and are most useful read together.
The Brain Vitality Index is released under CC BY-NC 4.0 — free for educational and non-commercial use with attribution. For commercial licensing or research collaboration, contact LifeByLogic.
LifeByLogic. (2026). The Brain Vitality Index (LBL-BVI v1.0) [Cognitive performance assessment]. https://lifebylogic.com/brain-lab/brain-vitality-index/
The seven tasks adapt instruments with a long history in cognitive psychology. The references below are the primary literature behind those paradigms; the provisional age-reference norms and the full scoring pipeline are documented in the methodology.
No. Just a quiet ten-to-fifteen minutes and a device you can tap or click on. Nothing is installed, and your responses stay in your browser.
About fourteen minutes across seven short tasks, each with a quick practice round before it counts.
No. It is a snapshot of how you performed today across seven cognitive domains — not an IQ score, not a clinical assessment, and not a diagnosis of any condition.
The seven tasks are adapted from well-established cognitive paradigms, but the age-reference norms and the Vitality Age are provisional and not yet calibrated on our own sample. Read your result as a structured snapshot, not a precise measurement.
Your responses stay in your browser. Your result is stored locally so the optional report can be generated; nothing is transmitted to our servers unless you choose to buy the report.
The free result gives you your Vitality Age, your seven domain scores, and your archetype. The optional $24.99 report turns those exact numbers into a personalized written analysis — a domain-by-domain read, what is lifting and dragging your Vitality Age, and a concrete plan.
Other Brain Lab instruments that pair well with your Vitality profile.
Estimate your brain age from lifestyle and health inputs — the companion to this live-performance test.
Brain LabSee how your sleep schedule is shaping your daytime cognitive performance.
Brain LabEstimate the buffer your life has built against age-related cognitive decline.
Brain LabA three-domain reflection on attention, hyperactivity, and emotional self-regulation.