If you are impatient you can try designing your own experiment that will use a shorter battery. The answers: 1. To stop a test in the middle, just click on the Quantified Mind logo and it will take you out of the test with no negative consequences. 2. That actually depends on the experiment - for most experiments we need complete data so you should complete all tests, but for some, you will see an "end session" button show up after you complete the first test, allowing you to save a partial result.