What specialized field was Lillian Moller Gilbreth's PhD in psychology focused on?

Answer

The study of motion and efficiency

Lillian Moller Gilbreth achieved a PhD in psychology, and her academic specialization within that field was centered on the study of motion and efficiency. This scientific background provided the theoretical foundation for her later work in applying industrial principles, such as time and motion studies, to the seemingly mundane tasks performed within the home. Her scholarly focus directly informed her practical innovations like the pedal bin.

What specialized field was Lillian Moller Gilbreth's PhD in psychology focused on?
inventioninventorpedal bin