How do I interpret my scores and comparisons?
What it basically comes down to in your brain map, is: the bigger the better. The white area on the brain map is your performance; if you click Compare and pick an age group, the blue area that appears is the average brain map of all users in that group. So if yours (the white one) is smaller, you score below average at the moment; if it's bigger, you score better.
The percentiles give a direct indication of your position: if you're for example in the 56th percentile for Language, that simply means you do better in Language than 56% of our users.