The Group Bourdon Test is a physcometric concentration test. The test is often used by train operating companies when selecting candidates that want to become train drivers.

The test involves a sheet full of boxes and in those boxes are black dots which are all in random patterns. The user has to select only the boxes that have groups of 4 black dots within.

The test lasts for 10 minutes and within this time the user is displayed 5 different pages of dots - each lasting 2 minutes.

The test is designed to show how well the user can focus on a repetitive, monotonous and boring task whilst being accurate. Any boxes the user has selected that contain anything other than the desired boxes of 4 dots counts against them as an error an lowers their score.

Speed is also important in the test. The user must try and select as many correct boxes as possible before the time runs out.

Research has shown that practicing this kind of activity before sitting such a test increases a users speed and accuracy.

The application will also record the user's score - so they can see if they have improved over time.

So, do you have what it takes to become a train driver?