ATTENTIONAL DEMANDS OF A TEMPORAL PREDICTION TASK - THE TRAJECTORY OF A TENNIS BALL

The purpose of this paper was to explore performance by 8 men, 18 to 35 years old, on a task of visual-coincidence judgment using a tennis ball as a stimulus. Focus on attentional demands in different viewing conditions (total vs partial vision) at different points along the ball's path served to assess relative demands. The findings indicate that interference between the visual coincidence task and the probe task was constant across conditions and was weakly differentiated across probe positions. This supports the assumption that the timing process rests upon a higher mechanism.