What does the Focus score show?

The Pison Focus measurement is a reliable indicator of your ability to maintain attention. Your Focus score is calculated based on a 3-minute psychomotor vigilance test (PVT), the gold standard for cognitive evaluations, including fatigue testing.  Your score is helped by fast responses to the stimulus and hurt by “errors” , which can be either delayed responses (as compared to your normal baseline) or missed responses.  Studies have shown that when you get impaired, whether the impairment is caused by fatigue or other factors, the number of errors.