Monitoring race car driver Biometrics data has been extremely insightful. The biggest discovery has been identifying driver stress and anxiety.
Our bodies send out clear signals when they are in a situation they are not confident or comfortable with. Individuals handle situations differently and some cope better than others. Where one corner or a section of the track might cause one driver to stress, other situations such as traffic or qualifying might affect another driver.
A common denominator is that a calm, relaxed driver is less prone to making mistakes and therefore, faster.
It was clear in this and other tests that the most stressed drivers are prone to making mistakes; the calmest drivers are consistently the fastest.