A new book by Fulton Schools Associate Professor Rob Gray counters some of the long-accepted techniques used in physical training to develop athletic skills and compete in sports. Gray, who teaches in the Fulton Schools human systems engineering program, says new research and knowledge is casting some doubt on the effectiveness of some longtime approaches to sports training and how athletes practice. In his book, he draws on his research on human perceptual-motor control, with an emphasis on demanding physical and perceptual actions involved in sports, driving and aviation. He proposes new ways to coach and guide people — especially youngsters — who are trying to master the movements necessary to excel in challenging sporting endeavors.