Sustained Attention Test
Measure how long your focus lasts—and when it starts to fade.
What is the Sustained Attention Test?
The Sustained Attention Test, also known as the Psychomotor Vigilance Task (PVT), is a simple but powerful tool used to measure how alert and responsive you are over a period of time. During the test, you’ll respond as quickly as possible whenever a visual stimulus appears. It sounds easy—but as the seconds stretch on, your brain’s ability to stay sharp is put to the test.
Why is this test important?
Sustained attention is the ability to maintain focus over time, especially during repetitive or monotonous tasks. It’s the kind of attention you need during long meetings, reading sessions, or deep work blocks. But fatigue, stress, and even mild sleep loss can chip away at it—without you noticing. This test helps you catch those lapses before they affect your performance.
What does it measure?
This test tracks:
- Reaction time: How fast you respond to the visual cue
- Lapses: Missed or very delayed responses
- Consistency: How your performance changes over the duration of the test
Together, these metrics give you a snapshot of your vigilance—your brain’s ability to stay alert and ready.
What do the results mean?
If your responses start strong but drift over time, or if you miss cues entirely, it may signal mental fatigue or low sleep quality. Your score gives insight into how well your brain stays “on” over time—a key ingredient for productivity.
What can I do with this information?
You can use your results to adjust your sleep habits, work sessions, or break schedules. Regular testing can help you track your alertness day-to-day and optimize your schedule for peak focus.