Abstract: A method and apparatus for testing and/or training persons, particularly athletes, with regard to reaction time, peripheral vision, foot speed, agility and (in some cases) strength of hand punch/speed or impact. In addition to testing and training persons, the method & apparatus can improve response and/or reaction time to verbal/audible stimuli. Testing and training can be applied in similar fashion to individuals, or groups of individuals, e.g. part or all of a sport team, under direction of a coach or of a testing operator/technician. An initiating stimulus (illumination of a light signal or motion of a “mounted” ball) provides a start signal to test subjects, who respond to the stimulus, as by touching or striking a blow to a target. Either of these actions will initiate one or more conditions which occur in a predetermined pattern, e.g. to start a timer which is halted by sensing the touch or blow.