Lillian Moller Gilbreth

Lillian Evelyn Moller Gilbreth (May 24, 1878 – January 2, 1972) was an American psychologist, industrial engineer, consultant, and educator. She was known for her works with psychology to time-and-motion studies. She was called "a genius in the art of living." 
Gilbreth, one of the first female engineers to earn a Ph.D.. She and her husband, Frank Bunker Gilbreth, were experts who work to the study of industrial engineering.