This test measures some aspects of attention, and takes about 10 minutes to complete.

You will see 5 targets on the computer screen

You must pay attention to the CENTRAL target, and indicate which way it is pointing by pressing the LEFT or RIGHT arrow keys on the keyboard.

There will always be a cross in the centre of the screen, and the targets will appear just above or below the cross.

	OR

Please try to keep your eyes fixed on the cross during the test, rather than moving them to look at the targets.

Sometimes, one or more asterisks will appear shortly before the targets.

When they are presented, the asterisks always appear exactly one half second before the targets.

If only one asterisk appears, and it is above or below the cross, it also tells you the location in which the targets will appear.

As mentioned earlier, you must pay attention to the central target, and indicate which way it is pointing by pressing the LEFT or RIGHT arrow keys on the keyboard.

This test measures both your reaction time and your accuracy, so it is important to respond as quickly as you can, but without making too many errors.

To facilitate quick responding, keep your left and right index fingers over the LEFT and RIGHT arrow keys respectively.

There are blocks of trials, with short breaks in between.

The first block is for practice, and takes about 2 minutes.

If you make a mistake during the practice block, an error message will appear. If no error message appears, you will know that you responded correctly.

No feedback is given during the 2 test blocks.

Please tell the test supervisor if you are ready to begin.