Walter Dill Scott's Increasing Human Efficiency in Business argues that the greatest frontier in modern industry is not machinery, but people. As organizations grow larger and more demanding, Scott treats psychology as a practical business science—one that can help employers understand how workers think, respond, and perform, and how wasted effort can be replaced with greater results. He insists that human capacity is far more variable than most people assume: a first-class worker may produce two to four times the average output, and many apparent limits are really untapped reserves of energy, skill, and attention. Drawing on athletics, scientific management, and figures like Edison, Harriman, Darwin, and Cyrus H. McCormick, Scott shows that coaching, competition, concentration, and disciplined effort can push people beyond supposed exhaustion without destroying health. He then turns to imitation, wages, supervision, promotion, and security, arguing that people naturally copy the standards around them and work harder when rewards are fair and the future feels stable. The book closes by showing how pleasure, comfort, and favorable surroundings deepen breathing, quicken recovery, and make customers, clients, and workers more receptive, productive, and successful. This edition has been fully restored with modern typesetting, custom cover design.