Adaptive Tracking Task (ATT)

In this test, a small circle (target) will continuously move across the screen in a semi-randomised fashion, so as to minimise the participant’s ability to predict the trajectory of the target. The participant is instructed to follow the moving target with their finger upon the touch screen so that it is consistently within the centre of the moving target on the screen. During the test, the speed of the circle is adjusted in response to the subject’s ability to keep the dot in the circle, ensuring that the test is adapted to the individual subject’s performance.