Frank Bunker Gilbreth -Lillian Moller Gilbreth
Just like Taylor, another scientists who was also in the process of development of industrial engineering are Frank B. Gilbreth and Lillian M. Gilbreth.
Frank Gilbreth started his working career as a bricklayer. He always asked questions about his work to increase speed. With the studies they made (with his wife Lillian Moller Gilbreth), they became very successful and got their own constructing company. Normally a bricklayer had been using 120 bricks per hour. But as a result of their studies, 350 bricks started to be using per hour. It means they increased the working speed almost 200%.
From their various studies the Gilbreths developed, the laws of human motion from which evolved the principles of motion economy.
More effort by the workers is not needed for the increament in the work speed. Moreover, exhaustion is decreased, too.
Another subject that Frank Gilbreth studied on is "the analysis of the basic human motions". He categorized the basic human motions and these are named as "Therblig". Also he continued his study in this subject with "Micro Motion Study".
While Frank Gilbreth was studying on more technically subjects, Lillian Gilbreath was studying for human psychology as a behavioural researcher. According to Lillian, the purpose of the scientific management was to help people to increase their abilities.
Gilbreths also improved a promotion plan. According to this plan, workers do their job, prepare themselves for promotion and teach others at the same time.
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