Following the number of studies dealing with the timing of the movement, focusing on the adult population and the population with cerebellar symptoms such as a Parkinson disease or essential tremor, (Bares, 2014), we try to look at the timing from other point of view. After effort to explain the causes of slowness and their relationship with age or stage of a disease, the present study attempts to determine the dynamics and the accuracy of sensorimotor skills, which is responsible for the adolescent brain during ontogenesis and puberty. Only boys from each age 6 to 18 for were tested. Subjects perform a special test on a PC with a length of about 45 minutes to test their response and timing of movement with number of tests in which they try to hit a moving target, which appears on the screen at 3 different angles (0 degrees, 15 degrees and 30 degrees) and at different speeds (accelerating, decelerating, constant). This whole process at unpredictable intervals in rotation for 45 minutes. We are expanding our previous results from 2016 in specific timing hits and miss shots in terms of age and frequency of PC gaming. Test data were evaluated from used program. Predictive motor timing suggests that the cerebellum plays an essential role in integrating incoming visual information with the motor output in a timely manner.